1212220220202 has 48 divisors (see below), whose sum is σ = 2665136204640. Its totient is φ = 398151554976.

The previous prime is 1212220220147. The next prime is 1212220220251. The reversal of 1212220220202 is 2020220222121.

1212220220202 is a `hidden beast` number, since 1 + 21 + 2 + 220 + 220 + 202 = 666.

It is a super-3 number, since 3×1212220220202³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 504213 + ... + 1636664.

It is an arithmetic number, because the mean of its divisors is an integer number (55523670930).

Almost surely, 2^{1212220220202} is an apocalyptic number.

1212220220202 is an abundant number, since it is smaller than the sum of its proper divisors (1452915984438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212220220202 is a wasteful number, since it uses less digits than its factorization.

1212220220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141347 (or 2141344 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1212220220202 its reverse (2020220222121), we get a palindrome (3232440442323).

The spelling of 1212220220202 in words is "one trillion, two hundred twelve billion, two hundred twenty million, two hundred twenty thousand, two hundred two".