20100221221010 has 32 divisors (see below), whose sum is σ = 41359814704512. Its totient is φ = 6889706386560.

The previous prime is 20100221220953. The next prime is 20100221221021. The reversal of 20100221221010 is 1012212200102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37188776 + ... + 37725395.

It is an arithmetic number, because the mean of its divisors is an integer number (1292494209516).

Almost surely, 2^{20100221221010} is an apocalyptic number.

20100221221010 is an abundant number, since it is smaller than the sum of its proper divisors (21259593483502).

20100221221010 is a wasteful number, since it uses less digits than its factorization.

20100221221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74918018.

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

Adding to 20100221221010 its reverse (1012212200102), we get a palindrome (21112433421112).

The spelling of 20100221221010 in words is "twenty trillion, one hundred billion, two hundred twenty-one million, two hundred twenty-one thousand, ten".