2200020121021 has 4 divisors (see below), whose sum is σ = 2200069095552. Its totient is φ = 2199971146492.

The previous prime is 2200020120941. The next prime is 2200020121069. The reversal of 2200020121021 is 1201210200022.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2200020121021 - 2²¹ = 2200018023869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2200020120992 and 2200020121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200020121081) 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, 24419821 + ... + 24509746.

It is an arithmetic number, because the mean of its divisors is an integer number (550017273888).

Almost surely, 2^{2200020121021} is an apocalyptic number.

It is an amenable number.

2200020121021 is a deficient number, since it is larger than the sum of its proper divisors (48974531).

2200020121021 is an equidigital number, since it uses as much as digits as its factorization.

2200020121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48974530.

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

Adding to 2200020121021 its reverse (1201210200022), we get a palindrome (3401230321043).

The spelling of 2200020121021 in words is "two trillion, two hundred billion, twenty million, one hundred twenty-one thousand, twenty-one".