1222002002021 has 32 divisors (see below), whose sum is σ = 1307533473792. Its totient is φ = 1139620426560.

The previous prime is 1222002001973. The next prime is 1222002002083. The reversal of 1222002002021 is 1202002002221.

It is a cyclic number.

It is not a de Polignac number, because 1222002002021 - 2¹⁴ = 1222001985637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222002001987 and 1222002002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222002002621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57601106 + ... + 57622316.

It is an arithmetic number, because the mean of its divisors is an integer number (40860421056).

Almost surely, 2^{1222002002021} is an apocalyptic number.

It is an amenable number.

1222002002021 is a deficient number, since it is larger than the sum of its proper divisors (85531471771).

1222002002021 is a wasteful number, since it uses less digits than its factorization.

1222002002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21713.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1222002002021 its reverse (1202002002221), we get a palindrome (2424004004242).

It can be divided in two parts, 122200200 and 2021, that added together give a palindrome (122202221).

The spelling of 1222002002021 in words is "one trillion, two hundred twenty-two billion, two million, two thousand, twenty-one".