21121020201002 has 8 divisors (see below), whose sum is σ = 33348979264800. Its totient is φ = 10004693779404.

The previous prime is 21121020200981. The next prime is 21121020201053. The reversal of 21121020201002 is 20010202012112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21121020201002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277908160502 + ... + 277908160577.

It is an arithmetic number, because the mean of its divisors is an integer number (4168622408100).

Almost surely, 2^{21121020201002} is an apocalyptic number.

21121020201002 is a deficient number, since it is larger than the sum of its proper divisors (12227959063798).

21121020201002 is a wasteful number, since it uses less digits than its factorization.

21121020201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555816321100.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21121020201002 its reverse (20010202012112), we get a palindrome (41131222213114).

The spelling of 21121020201002 in words is "twenty-one trillion, one hundred twenty-one billion, twenty million, two hundred one thousand, two".