2000122221021 has 32 divisors (see below), whose sum is σ = 2711394590208. Its totient is φ = 1311204438720.

The previous prime is 2000122220977. The next prime is 2000122221037. The reversal of 2000122221021 is 1201222210002.

It is not a de Polignac number, because 2000122221021 - 2¹⁷ = 2000122089949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000122221061) 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, 446154846 + ... + 446159328.

It is an arithmetic number, because the mean of its divisors is an integer number (84731080944).

Almost surely, 2^{2000122221021} is an apocalyptic number.

It is an amenable number.

2000122221021 is a deficient number, since it is larger than the sum of its proper divisors (711272369187).

2000122221021 is a wasteful number, since it uses less digits than its factorization.

2000122221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7961.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2000122221021 its reverse (1201222210002), we get a palindrome (3201344431023).

The spelling of 2000122221021 in words is "two trillion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-one".