21207381302 has 8 divisors (see below), whose sum is σ = 32550864456. Its totient is φ = 10357093152.

The previous prime is 21207381301. The next prime is 21207381331. The reversal of 21207381302 is 20318370212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21207381301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123298643 + ... + 123298814.

It is an arithmetic number, because the mean of its divisors is an integer number (4068858057).

Almost surely, 2^21207381302 is an apocalyptic number.

21207381302 is a deficient number, since it is larger than the sum of its proper divisors (11343483154).

21207381302 is a wasteful number, since it uses less digits than its factorization.

21207381302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246597502.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 21207381302 in words is "twenty-one billion, two hundred seven million, three hundred eighty-one thousand, three hundred two".