21253322335212 has 72 divisors (see below), whose sum is σ = 59187920278032. Its totient is φ = 6376634352000.

The previous prime is 21253322335187. The next prime is 21253322335321.

21253322335212 is a `hidden beast` number, since 2 + 1 + 253 + 32 + 23 + 352 + 1 + 2 = 666.

21253322335212 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265653103 + ... + 265733094.

It is an arithmetic number, because the mean of its divisors is an integer number (822054448306).

Almost surely, 2^{21253322335212} is an apocalyptic number.

21253322335212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21253322335212 is an abundant number, since it is smaller than the sum of its proper divisors (37934597942820).

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

21253322335212 is a wasteful number, since it uses less digits than its factorization.

21253322335212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531386319 (or 531386314 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

It can be divided in two parts, 2125332 and 2335212, that added together give a square (4460544 = 2112²).

The spelling of 21253322335212 in words is "twenty-one trillion, two hundred fifty-three billion, three hundred twenty-two million, three hundred thirty-five thousand, two hundred twelve".