101211221110 has 16 divisors (see below), whose sum is σ = 182765992032. Its totient is φ = 40354312000.

The previous prime is 101211221081. The next prime is 101211221119. The reversal of 101211221110 is 11122112101.

It is a happy number.

It is a super-2 number, since 2×101211221110² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211221119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16268791 + ... + 16275010.

It is an arithmetic number, because the mean of its divisors is an integer number (11422874502).

Almost surely, 2^101211221110 is an apocalyptic number.

101211221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101211221110 is a deficient number, since it is larger than the sum of its proper divisors (81554770922).

101211221110 is a wasteful number, since it uses less digits than its factorization.

101211221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32544119.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101211221110 its reverse (11122112101), we get a palindrome (112333333211).

The spelling of 101211221110 in words is "one hundred one billion, two hundred eleven million, two hundred twenty-one thousand, one hundred ten".