1020122012021 has 4 divisors (see below), whose sum is σ = 1165853728032. Its totient is φ = 874390296012.

The previous prime is 1020122011991. The next prime is 1020122012051. The reversal of 1020122012021 is 1202102210201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1020122011991) and next prime (1020122012051).

It is a cyclic number.

It is not a de Polignac number, because 1020122012021 - 2¹⁰ = 1020122010997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020122011987 and 1020122012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020122012051) 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, 72865857995 + ... + 72865858008.

It is an arithmetic number, because the mean of its divisors is an integer number (291463432008).

Almost surely, 2^{1020122012021} is an apocalyptic number.

It is an amenable number.

1020122012021 is a deficient number, since it is larger than the sum of its proper divisors (145731716011).

1020122012021 is an equidigital number, since it uses as much as digits as its factorization.

1020122012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145731716010.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1020122012021 its reverse (1202102210201), we get a palindrome (2222224222222).

The spelling of 1020122012021 in words is "one trillion, twenty billion, one hundred twenty-two million, twelve thousand, twenty-one".