22121100010 has 32 divisors (see below), whose sum is σ = 40237885440. Its totient is φ = 8755604928.

The previous prime is 22121099989. The next prime is 22121100013. The reversal of 22121100010 is 1000112122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 22121100010.

It is not an unprimeable number, because it can be changed into a prime (22121100013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343639 + ... + 402901.

It is an arithmetic number, because the mean of its divisors is an integer number (1257433920).

Almost surely, 2^22121100010 is an apocalyptic number.

22121100010 is a deficient number, since it is larger than the sum of its proper divisors (18116785430).

22121100010 is a wasteful number, since it uses less digits than its factorization.

22121100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59662.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 22121100010 its reverse (1000112122), we get a palindrome (23121212132).

The spelling of 22121100010 in words is "twenty-two billion, one hundred twenty-one million, one hundred thousand, ten".