20221504012 has 24 divisors (see below), whose sum is σ = 37536597504. Its totient is φ = 9498899712.

The previous prime is 20221503971. The next prime is 20221504013. The reversal of 20221504012 is 21040512202.

It is a super-2 number, since 2×20221504012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20221504013) 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, 229068 + ... + 304819.

It is an arithmetic number, because the mean of its divisors is an integer number (1564024896).

Almost surely, 2^20221504012 is an apocalyptic number.

It is an amenable number.

20221504012 is a deficient number, since it is larger than the sum of its proper divisors (17315093492).

20221504012 is a wasteful number, since it uses less digits than its factorization.

20221504012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534465 (or 534463 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The spelling of 20221504012 in words is "twenty billion, two hundred twenty-one million, five hundred four thousand, twelve".