101220221212 has 48 divisors (see below), whose sum is σ = 194043330432. Its totient is φ = 45818002880.

The previous prime is 101220221173. The next prime is 101220221231. The reversal of 101220221212 is 212122022101.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10852383 + ... + 10861705.

It is an arithmetic number, because the mean of its divisors is an integer number (4042569384).

Almost surely, 2^101220221212 is an apocalyptic number.

It is an amenable number.

101220221212 is a deficient number, since it is larger than the sum of its proper divisors (92823109220).

101220221212 is a wasteful number, since it uses less digits than its factorization.

101220221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10338 (or 10336 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101220221212 its reverse (212122022101), we get a palindrome (313342243313).

The spelling of 101220221212 in words is "one hundred one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".