2002220100021 has 16 divisors (see below), whose sum is σ = 2785734904320. Its totient is φ = 1276760905200.

The previous prime is 2002220100017. The next prime is 2002220100037. The reversal of 2002220100021 is 1200010222002.

It is not a de Polignac number, because 2002220100021 - 2² = 2002220100017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002220105021) 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, 6787246 + ... + 7076096.

It is an arithmetic number, because the mean of its divisors is an integer number (174108431520).

Almost surely, 2^{2002220100021} is an apocalyptic number.

It is an amenable number.

2002220100021 is a deficient number, since it is larger than the sum of its proper divisors (783514804299).

2002220100021 is a wasteful number, since it uses less digits than its factorization.

2002220100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389336.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2002220100021 its reverse (1200010222002), we get a palindrome (3202230322023).

The spelling of 2002220100021 in words is "two trillion, two billion, two hundred twenty million, one hundred thousand, twenty-one".