101221226120 has 32 divisors (see below), whose sum is σ = 260283153600. Its totient is φ = 34704420288.

The previous prime is 101221226077. The next prime is 101221226131. The reversal of 101221226120 is 21622122101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 101221226092 and 101221226101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180751910 + ... + 180752469.

It is an arithmetic number, because the mean of its divisors is an integer number (8133848550).

Almost surely, 2^101221226120 is an apocalyptic number.

101221226120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221226120 is an abundant number, since it is smaller than the sum of its proper divisors (159061927480).

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

101221226120 is a wasteful number, since it uses less digits than its factorization.

101221226120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361504397 (or 361504393 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 101221226120 its reverse (21622122101), we get a palindrome (122843348221).

The spelling of 101221226120 in words is "one hundred one billion, two hundred twenty-one million, two hundred twenty-six thousand, one hundred twenty".