10201221012 has 24 divisors (see below), whose sum is σ = 24446170336. Its totient is φ = 3308503968.

The previous prime is 10201221007. The next prime is 10201221013. The reversal of 10201221012 is 21012210201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201221013) 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, 11487418 + ... + 11488305.

Almost surely, 2^10201221012 is an apocalyptic number.

10201221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10201221012 is an abundant number, since it is smaller than the sum of its proper divisors (14244949324).

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

10201221012 is a wasteful number, since it uses less digits than its factorization.

10201221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22975767 (or 22975765 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10201221012 its reverse (21012210201), we get a palindrome (31213431213).

The spelling of 10201221012 in words is "ten billion, two hundred one million, two hundred twenty-one thousand, twelve".