20101201221010 has 64 divisors (see below), whose sum is σ = 46067474476800. Its totient is φ = 6142329914112.

The previous prime is 20101201221007. The next prime is 20101201221107. The reversal of 20101201221010 is 1012210210102.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380822440 + ... + 380875219.

It is an arithmetic number, because the mean of its divisors is an integer number (719804288700).

Almost surely, 2^{20101201221010} is an apocalyptic number.

20101201221010 is an abundant number, since it is smaller than the sum of its proper divisors (25966273255790).

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

20101201221010 is a wasteful number, since it uses less digits than its factorization.

20101201221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761697715.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20101201221010 its reverse (1012210210102), we get a palindrome (21113411431112).

The spelling of 20101201221010 in words is "twenty trillion, one hundred one billion, two hundred one million, two hundred twenty-one thousand, ten".