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202012219 = 421479839
BaseRepresentation
bin11000000101001…
…11011000111011
3112002010021200001
430002213120323
5403203342334
632013453431
75002034623
oct1402473073
9462107601
10202012219
11a4037852
12577a1277
1332b10176
141cb87883
1512b05714
hexc0a763b

202012219 has 4 divisors (see below), whose sum is σ = 202492480. Its totient is φ = 201531960.

The previous prime is 202012211. The next prime is 202012229. The reversal of 202012219 is 912210202.

202012219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912210202 = 2456105101.

It is a cyclic number.

It is not a de Polignac number, because 202012219 - 23 = 202012211 is a prime.

It is a super-2 number, since 2×2020122192 = 81617873250607922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202012196 and 202012205.

It is not an unprimeable number, because it can be changed into a prime (202012211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239499 + ... + 240340.

It is an arithmetic number, because the mean of its divisors is an integer number (50623120).

Almost surely, 2202012219 is an apocalyptic number.

202012219 is a deficient number, since it is larger than the sum of its proper divisors (480261).

202012219 is an equidigital number, since it uses as much as digits as its factorization.

202012219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480260.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 202012219 is about 14213.1002599714. The cubic root of 202012219 is about 586.7582613890.

The spelling of 202012219 in words is "two hundred two million, twelve thousand, two hundred nineteen".

Divisors: 1 421 479839 202012219