101020122022021 has 4 divisors (see below), whose sum is σ = 101020899726252. Its totient is φ = 101019344317792.

The previous prime is 101020122021799. The next prime is 101020122022037. The reversal of 101020122022021 is 120220221020101.

It is a happy number.

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 65899813336900 + 35120308685121 = 8117870^2 + 5926239^2 .

It is a cyclic number.

It is not a de Polignac number, because 101020122022021 - 2¹³ = 101020122013829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101020122021986 and 101020122022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020122022091) 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, 388657240 + ... + 388917073.

It is an arithmetic number, because the mean of its divisors is an integer number (25255224931563).

Almost surely, 2^{101020122022021} is an apocalyptic number.

It is an amenable number.

101020122022021 is a deficient number, since it is larger than the sum of its proper divisors (777704231).

101020122022021 is an equidigital number, since it uses as much as digits as its factorization.

101020122022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777704230.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101020122022021 its reverse (120220221020101), we get a palindrome (221240343042122).

The spelling of 101020122022021 in words is "one hundred one trillion, twenty billion, one hundred twenty-two million, twenty-two thousand, twenty-one".