21210100222002 has 32 divisors (see below), whose sum is σ = 43570195395072. Its totient is φ = 6878398310784.

The previous prime is 21210100221901. The next prime is 21210100222021. The reversal of 21210100222002 is 20022200101212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069378 + ... + 6600285.

It is an arithmetic number, because the mean of its divisors is an integer number (1361568606096).

Almost surely, 2^{21210100222002} is an apocalyptic number.

21210100222002 is an abundant number, since it is smaller than the sum of its proper divisors (22360095173070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21210100222002 is a wasteful number, since it uses less digits than its factorization.

21210100222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682162.

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

Adding to 21210100222002 its reverse (20022200101212), we get a palindrome (41232300323214).

The spelling of 21210100222002 in words is "twenty-one trillion, two hundred ten billion, one hundred million, two hundred twenty-two thousand, two".