1012020022021 has 8 divisors (see below), whose sum is σ = 1022663720000. Its totient is φ = 1001392060032.

The previous prime is 1012020021967. The next prime is 1012020022033. The reversal of 1012020022021 is 1202200202101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012020022021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012020021992 and 1012020022010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012020022081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3804675 + ... + 4061968.

It is an arithmetic number, because the mean of its divisors is an integer number (127832965000).

Almost surely, 2^{1012020022021} is an apocalyptic number.

It is an amenable number.

1012020022021 is a deficient number, since it is larger than the sum of its proper divisors (10643697979).

1012020022021 is a wasteful number, since it uses less digits than its factorization.

1012020022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7867995.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1012020022021 its reverse (1202200202101), we get a palindrome (2214220224122).

The spelling of 1012020022021 in words is "one trillion, twelve billion, twenty million, twenty-two thousand, twenty-one".