21120101202 has 64 divisors (see below), whose sum is σ = 43835710464. Its totient is φ = 6778494720.

The previous prime is 21120101183. The next prime is 21120101207. The reversal of 21120101202 is 20210102112.

It is not an unprimeable number, because it can be changed into a prime (21120101207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8959408 + ... + 8961764.

It is an arithmetic number, because the mean of its divisors is an integer number (684932976).

Almost surely, 2^21120101202 is an apocalyptic number.

21120101202 is an abundant number, since it is smaller than the sum of its proper divisors (22715609262).

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

21120101202 is a wasteful number, since it uses less digits than its factorization.

21120101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21120101202 its reverse (20210102112), we get a palindrome (41330203314).

The spelling of 21120101202 in words is "twenty-one billion, one hundred twenty million, one hundred one thousand, two hundred two".