101221220010122 has 4 divisors (see below), whose sum is σ = 151831830015186. Its totient is φ = 50610610005060.

The previous prime is 101221220010101. The next prime is 101221220010149. The reversal of 101221220010122 is 221010022122101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 88886788024441 + 12334431985681 = 9427979^2 + 3512041^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 101221220010122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25305305002529 + ... + 25305305002532.

Almost surely, 2^{101221220010122} is an apocalyptic number.

101221220010122 is a deficient number, since it is larger than the sum of its proper divisors (50610610005064).

101221220010122 is an equidigital number, since it uses as much as digits as its factorization.

101221220010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50610610005063.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101221220010122 its reverse (221010022122101), we get a palindrome (322231242132223).

The spelling of 101221220010122 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twenty million, ten thousand, one hundred twenty-two".