12122021012 has 12 divisors (see below), whose sum is σ = 21411794880. Its totient is φ = 6004365336.

The previous prime is 12122020961. The next prime is 12122021017. The reversal of 12122021012 is 21012022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122021017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14160812 + ... + 14161667.

It is an arithmetic number, because the mean of its divisors is an integer number (1784316240).

Almost surely, 2^12122021012 is an apocalyptic number.

It is an amenable number.

12122021012 is a deficient number, since it is larger than the sum of its proper divisors (9289773868).

12122021012 is a wasteful number, since it uses less digits than its factorization.

12122021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28322590 (or 28322588 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12122021012 its reverse (21012022121), we get a palindrome (33134043133).

The spelling of 12122021012 in words is "twelve billion, one hundred twenty-two million, twenty-one thousand, twelve".