21002211220012 has 48 divisors (see below), whose sum is σ = 40111153415424. Its totient is φ = 9542645640000.

The previous prime is 21002211220009. The next prime is 21002211220013.

It is a happy number.

21002211220012 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21002211220012² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21002211220013) 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, 2121216262 + ... + 2121226162.

It is an arithmetic number, because the mean of its divisors is an integer number (835649029488).

Almost surely, 2^{21002211220012} is an apocalyptic number.

21002211220012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21002211220012 is a deficient number, since it is larger than the sum of its proper divisors (19108942195412).

21002211220012 is a wasteful number, since it uses less digits than its factorization.

21002211220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24310 (or 24308 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

It can be divided in two parts, 2100221 and 1220012, that added together give a palindrome (3320233).

The spelling of 21002211220012 in words is "twenty-one trillion, two billion, two hundred eleven million, two hundred twenty thousand, twelve".