101220221210 has 32 divisors (see below), whose sum is σ = 183970541520. Its totient is φ = 40094466048.

The previous prime is 101220221173. The next prime is 101220221231. The reversal of 101220221210 is 12122022101.

It can be written as a sum of positive squares in 8 ways, for example, as 36562411369 + 64657809841 = 191213^2 + 254279^2 .

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, 1264046 + ... + 1341734.

Almost surely, 2^101220221210 is an apocalyptic number.

101220221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101220221210 is a deficient number, since it is larger than the sum of its proper divisors (82750320310).

101220221210 is a wasteful number, since it uses less digits than its factorization.

101220221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78962.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101220221210 its reverse (12122022101), we get a palindrome (113342243311).

The spelling of 101220221210 in words is "one hundred one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred ten".