101221123130 has 16 divisors (see below), whose sum is σ = 182263073184. Its totient is φ = 40473993360.

The previous prime is 101221123117. The next prime is 101221123139. The reversal of 101221123130 is 31321122101.

It is a junction number, because it is equal to n+sod(n) for n = 101221123099 and 101221123108.

It is not an unprimeable number, because it can be changed into a prime (101221123139) 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, 1777556 + ... + 1833615.

It is an arithmetic number, because the mean of its divisors is an integer number (11391442074).

Almost surely, 2^101221123130 is an apocalyptic number.

101221123130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101221123130 is a deficient number, since it is larger than the sum of its proper divisors (81041950054).

101221123130 is a wasteful number, since it uses less digits than its factorization.

101221123130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613981.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101221123130 its reverse (31321122101), we get a palindrome (132542245231).

The spelling of 101221123130 in words is "one hundred one billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred thirty".