202121112012 has 24 divisors (see below), whose sum is σ = 475216053312. Its totient is φ = 66859400400.

The previous prime is 202121111987. The next prime is 202121112019. The reversal of 202121112012 is 210211121202.

It is a super-3 number, since 3×202121112012³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202121111982 and 202121112000.

It is not an unprimeable number, because it can be changed into a prime (202121112019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64286314 + ... + 64289457.

It is an arithmetic number, because the mean of its divisors is an integer number (19800668888).

Almost surely, 2^202121112012 is an apocalyptic number.

It is an amenable number.

202121112012 is an abundant number, since it is smaller than the sum of its proper divisors (273094941300).

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

202121112012 is a wasteful number, since it uses less digits than its factorization.

202121112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128575909 (or 128575907 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202121112012 its reverse (210211121202), we get a palindrome (412332233214).

The spelling of 202121112012 in words is "two hundred two billion, one hundred twenty-one million, one hundred twelve thousand, twelve".