21267701342 has 12 divisors (see below), whose sum is σ = 32932412448. Its totient is φ = 10290267600.

The previous prime is 21267701321. The next prime is 21267701347. The reversal of 21267701342 is 24310776212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21267701347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1139042 + ... + 1157562.

It is an arithmetic number, because the mean of its divisors is an integer number (2744367704).

Almost surely, 2^21267701342 is an apocalyptic number.

21267701342 is a deficient number, since it is larger than the sum of its proper divisors (11664711106).

21267701342 is an frugal number, since it uses more digits than its factorization.

21267701342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37075 (or 18554 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 21267701342 in words is "twenty-one billion, two hundred sixty-seven million, seven hundred one thousand, three hundred forty-two".