101221154422111 has 4 divisors (see below), whose sum is σ = 101221405557552. Its totient is φ = 101220903286672.

The previous prime is 101221154422061. The next prime is 101221154422181. The reversal of 101221154422111 is 111224451122101.

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

It is a cyclic number.

It is not a de Polignac number, because 101221154422111 - 2¹³ = 101221154413919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101221154422111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221154422181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124962166 + ... + 125769571.

It is an arithmetic number, because the mean of its divisors is an integer number (25305351389388).

Almost surely, 2^{101221154422111} is an apocalyptic number.

101221154422111 is a deficient number, since it is larger than the sum of its proper divisors (251135441).

101221154422111 is an equidigital number, since it uses as much as digits as its factorization.

101221154422111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251135440.

The product of its (nonzero) digits is 1280, while the sum is 28.

The spelling of 101221154422111 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred fifty-four million, four hundred twenty-two thousand, one hundred eleven".