21234022043212 has 24 divisors (see below), whose sum is σ = 40939041607632. Its totient is φ = 9556265544000.

The previous prime is 21234022043167. The next prime is 21234022043219.

21234022043212 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21234022043212² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21234022043219) 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, 2389061943 + ... + 2389070830.

It is an arithmetic number, because the mean of its divisors is an integer number (1705793400318).

Almost surely, 2^{21234022043212} is an apocalyptic number.

21234022043212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21234022043212 is a deficient number, since it is larger than the sum of its proper divisors (19705019564420).

21234022043212 is a wasteful number, since it uses less digits than its factorization.

21234022043212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778132889 (or 4778132887 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

It can be divided in two parts, 2123402 and 2043212, that added together give a palindrome (4166614).

The spelling of 21234022043212 in words is "twenty-one trillion, two hundred thirty-four billion, twenty-two million, forty-three thousand, two hundred twelve".