101211221210 has 32 divisors (see below), whose sum is σ = 198776071872. Its totient is φ = 36797777280.

The previous prime is 101211221203. The next prime is 101211221213. The reversal of 101211221210 is 12122112101.

It is a super-2 number, since 2×101211221210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101211221213) 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, 592277 + ... + 743783.

It is an arithmetic number, because the mean of its divisors is an integer number (6211752246).

Almost surely, 2^101211221210 is an apocalyptic number.

101211221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101211221210 is a deficient number, since it is larger than the sum of its proper divisors (97564850662).

101211221210 is a wasteful number, since it uses less digits than its factorization.

101211221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157598.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101211221210 its reverse (12122112101), we get a palindrome (113333333311).

The spelling of 101211221210 in words is "one hundred one billion, two hundred eleven million, two hundred twenty-one thousand, two hundred ten".