2121220202002 has 16 divisors (see below), whose sum is σ = 3484916646624. Its totient is φ = 960349600000.

The previous prime is 2121220201993. The next prime is 2121220202009. The reversal of 2121220202002 is 2002020221212.

It is not an unprimeable number, because it can be changed into a prime (2121220202009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192064399 + ... + 192075442.

It is an arithmetic number, because the mean of its divisors is an integer number (217807290414).

Almost surely, 2^{2121220202002} is an apocalyptic number.

2121220202002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2121220202002 is a deficient number, since it is larger than the sum of its proper divisors (1363696444622).

2121220202002 is a wasteful number, since it uses less digits than its factorization.

2121220202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384140105.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2121220202002 its reverse (2002020221212), we get a palindrome (4123240423214).

The spelling of 2121220202002 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred two thousand, two".