202111021012 has 6 divisors (see below), whose sum is σ = 353694286778. Its totient is φ = 101055510504.

The previous prime is 202111021003. The next prime is 202111021039. The reversal of 202111021012 is 210120111202.

It can be written as a sum of positive squares in only one way, i.e., 186031766596 + 16079254416 = 431314^2 + 126804^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202111020983 and 202111021001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25263877623 + ... + 25263877630.

Almost surely, 2^202111021012 is an apocalyptic number.

It is an amenable number.

202111021012 is a deficient number, since it is larger than the sum of its proper divisors (151583265766).

202111021012 is a wasteful number, since it uses less digits than its factorization.

202111021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50527755257 (or 50527755255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 202111021012 its reverse (210120111202), we get a palindrome (412231132214).

The spelling of 202111021012 in words is "two hundred two billion, one hundred eleven million, twenty-one thousand, twelve".