101100100021210 has 64 divisors (see below), whose sum is σ = 193222365227424. Its totient is φ = 37955174400000.

The previous prime is 101100100021189. The next prime is 101100100021213. The reversal of 101100100021210 is 12120001001101.

It can be written as a sum of positive squares in 16 ways, for example, as 5210157760929 + 95889942260281 = 2282577^2 + 9792341^2 .

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

It is not an unprimeable number, because it can be changed into a prime (101100100021213) 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, 101626210 + ... + 102616210.

Almost surely, 2^{101100100021210} is an apocalyptic number.

101100100021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101100100021210 is a deficient number, since it is larger than the sum of its proper divisors (92122265206214).

101100100021210 is a wasteful number, since it uses less digits than its factorization.

101100100021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991699.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101100100021210 its reverse (12120001001101), we get a palindrome (113220101022311).

The spelling of 101100100021210 in words is "one hundred one trillion, one hundred billion, one hundred million, twenty-one thousand, two hundred ten".