1022420220421 has 16 divisors (see below), whose sum is σ = 1035571149184. Its totient is φ = 1009333773504.

The previous prime is 1022420220413. The next prime is 1022420220443. The reversal of 1022420220421 is 1240220242201.

It is a cyclic number.

It is not a de Polignac number, because 1022420220421 - 2³ = 1022420220413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022420220392 and 1022420220401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022420220821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117826735 + ... + 117835411.

It is an arithmetic number, because the mean of its divisors is an integer number (64723196824).

Almost surely, 2^{1022420220421} is an apocalyptic number.

It is an amenable number.

1022420220421 is a deficient number, since it is larger than the sum of its proper divisors (13150928763).

1022420220421 is a wasteful number, since it uses less digits than its factorization.

1022420220421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12220.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 1022420220421 its reverse (1240220242201), we get a palindrome (2262640462622).

The spelling of 1022420220421 in words is "one trillion, twenty-two billion, four hundred twenty million, two hundred twenty thousand, four hundred twenty-one".