202111012 has 12 divisors (see below), whose sum is σ = 358539916. Its totient is φ = 99671040.

The previous prime is 202111001. The next prime is 202111073. The reversal of 202111012 is 210111202.

It can be written as a sum of positive squares in 2 ways, for example, as 170459136 + 31651876 = 13056^2 + 5626^2 .

It is a super-2 number, since 2×202111012² = 81697722343328288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202111012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345789 + ... + 346372.

Almost surely, 2^202111012 is an apocalyptic number.

It is an amenable number.

202111012 is a deficient number, since it is larger than the sum of its proper divisors (156428904).

202111012 is a wasteful number, since it uses less digits than its factorization.

202111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692238 (or 692236 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 202111012 is about 14216.5752556655. The cubic root of 202111012 is about 586.8538961352.

Adding to 202111012 its reverse (210111202), we get a palindrome (412222214).

The spelling of 202111012 in words is "two hundred two million, one hundred eleven thousand, twelve".