101221001012210 has 32 divisors (see below), whose sum is σ = 192917258254512. Its totient is φ = 38106346844160.

The previous prime is 101221001012203. The next prime is 101221001012237. The reversal of 101221001012210 is 12210100122101.

It can be written as a sum of positive squares in 8 ways, for example, as 40198047277249 + 61022953734961 = 6340193^2 + 7811719^2 .

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, 14266394 + ... + 20148746.

Almost surely, 2^{101221001012210} is an apocalyptic number.

101221001012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101221001012210 is a deficient number, since it is larger than the sum of its proper divisors (91696257242302).

101221001012210 is a wasteful number, since it uses less digits than its factorization.

101221001012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5983598.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101221001012210 its reverse (12210100122101), we get a palindrome (113431101134311).

The spelling of 101221001012210 in words is "one hundred one trillion, two hundred twenty-one billion, one million, twelve thousand, two hundred ten".