20121202212 has 24 divisors (see below), whose sum is σ = 48218377536. Its totient is φ = 6525795168.

The previous prime is 20121202207. The next prime is 20121202223. The reversal of 20121202212 is 21220212102.

It is a junction number, because it is equal to n+sod(n) for n = 20121202191 and 20121202200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22658568 + ... + 22659455.

It is an arithmetic number, because the mean of its divisors is an integer number (2009099064).

Almost surely, 2^20121202212 is an apocalyptic number.

It is an amenable number.

20121202212 is an abundant number, since it is smaller than the sum of its proper divisors (28097175324).

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

20121202212 is a wasteful number, since it uses less digits than its factorization.

20121202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45318067 (or 45318065 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20121202212 its reverse (21220212102), we get a palindrome (41341414314).

The spelling of 20121202212 in words is "twenty billion, one hundred twenty-one million, two hundred two thousand, two hundred twelve".