12122021004 has 24 divisors (see below), whose sum is σ = 28286591088. Its totient is φ = 4040405760.

The previous prime is 12122020961. The next prime is 12122021017. The reversal of 12122021004 is 40012022121.

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, 253224 + ... + 297264.

It is an arithmetic number, because the mean of its divisors is an integer number (1178607962).

Almost surely, 2^12122021004 is an apocalyptic number.

It is an amenable number.

12122021004 is an abundant number, since it is smaller than the sum of its proper divisors (16164570084).

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

12122021004 is a wasteful number, since it uses less digits than its factorization.

12122021004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66985 (or 66983 counting only the distinct ones).

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

Adding to 12122021004 its reverse (40012022121), we get a palindrome (52134043125).

The spelling of 12122021004 in words is "twelve billion, one hundred twenty-two million, twenty-one thousand, four".