101111022022121 has 4 divisors (see below), whose sum is σ = 101286257762772. Its totient is φ = 100935786281472.

The previous prime is 101111022022103. The next prime is 101111022022147. The reversal of 101111022022121 is 121220220111101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 99538533610000 + 1572488412121 = 9976900^2 + 1253989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101111022022121 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 101111022022121.

It is not an unprimeable number, because it can be changed into a prime (101111022022721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87617869460 + ... + 87617870613.

It is an arithmetic number, because the mean of its divisors is an integer number (25321564440693).

Almost surely, 2^{101111022022121} is an apocalyptic number.

It is an amenable number.

101111022022121 is a deficient number, since it is larger than the sum of its proper divisors (175235740651).

101111022022121 is an equidigital number, since it uses as much as digits as its factorization.

101111022022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175235740650.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101111022022121 its reverse (121220220111101), we get a palindrome (222331242133222).

The spelling of 101111022022121 in words is "one hundred one trillion, one hundred eleven billion, twenty-two million, twenty-two thousand, one hundred twenty-one".