20101021021110 has 64 divisors (see below), whose sum is σ = 48722678737920. Its totient is φ = 5306919196800.

The previous prime is 20101021021093. The next prime is 20101021021111. The reversal of 20101021021110 is 1112012010102.

It is a super-2 number, since 2×20101021021110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101021021111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60504031 + ... + 60835349.

It is an arithmetic number, because the mean of its divisors is an integer number (761291855280).

Almost surely, 2^{20101021021110} is an apocalyptic number.

20101021021110 is an abundant number, since it is smaller than the sum of its proper divisors (28621657716810).

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

20101021021110 is a wasteful number, since it uses less digits than its factorization.

20101021021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351453.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20101021021110 its reverse (1112012010102), we get a palindrome (21213033031212).

The spelling of 20101021021110 in words is "twenty trillion, one hundred one billion, twenty-one million, twenty-one thousand, one hundred ten".