21120220201002 has 32 divisors (see below), whose sum is σ = 45490559325120. Its totient is φ = 6498407253120.

The previous prime is 21120220201001. The next prime is 21120220201007. The reversal of 21120220201002 is 20010202202112.

It is a super-2 number, since 2×21120220201002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21120220201001) 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, 1682302 + ... + 6713462.

It is an arithmetic number, because the mean of its divisors is an integer number (1421579978910).

Almost surely, 2^{21120220201002} is an apocalyptic number.

21120220201002 is an abundant number, since it is smaller than the sum of its proper divisors (24370339124118).

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

21120220201002 is a wasteful number, since it uses less digits than its factorization.

21120220201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084998.

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

Adding to 21120220201002 its reverse (20010202202112), we get a palindrome (41130422403114).

The spelling of 21120220201002 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty million, two hundred one thousand, two".