21012001120202 has 16 divisors (see below), whose sum is σ = 31700466214560. Its totient is φ = 10445180120112.

The previous prime is 21012001120133. The next prime is 21012001120207. The reversal of 21012001120202 is 20202110021012.

It is not an unprimeable number, because it can be changed into a prime (21012001120207) 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, 56218313 + ... + 56590835.

It is an arithmetic number, because the mean of its divisors is an integer number (1981279138410).

Almost surely, 2^{21012001120202} is an apocalyptic number.

21012001120202 is a deficient number, since it is larger than the sum of its proper divisors (10688465094358).

21012001120202 is a wasteful number, since it uses less digits than its factorization.

21012001120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535717.

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

Adding to 21012001120202 its reverse (20202110021012), we get a palindrome (41214111141214).

The spelling of 21012001120202 in words is "twenty-one trillion, twelve billion, one million, one hundred twenty thousand, two hundred two".