202102011 has 12 divisors (see below), whose sum is σ = 292295640. Its totient is φ = 134563680.

The previous prime is 202102003. The next prime is 202102039. The reversal of 202102011 is 110201202.

It is not a de Polignac number, because 202102011 - 2³ = 202102003 is a prime.

It is a super-3 number, since 3×202102011³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 202101984 and 202102002.

It is not an unprimeable number, because it can be changed into a prime (202104011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6546 + ... + 21143.

It is an arithmetic number, because the mean of its divisors is an integer number (24357970).

Almost surely, 2^202102011 is an apocalyptic number.

202102011 is a deficient number, since it is larger than the sum of its proper divisors (90193629).

202102011 is a wasteful number, since it uses less digits than its factorization.

202102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28506 (or 28503 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 202102011 is about 14216.2586850409. The cubic root of 202102011 is about 586.8451841732.

Adding to 202102011 its reverse (110201202), we get a palindrome (312303213).

The spelling of 202102011 in words is "two hundred two million, one hundred two thousand, eleven".