21427261301 has 8 divisors (see below), whose sum is σ = 21622910400. Its totient is φ = 21232205280.

The previous prime is 21427261259. The next prime is 21427261309. The reversal of 21427261301 is 10316272412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21427261301 is a prime.

It is a super-2 number, since 2×21427261301² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21427261309) 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, 75521 + ... + 220358.

It is an arithmetic number, because the mean of its divisors is an integer number (2702863800).

Almost surely, 2^21427261301 is an apocalyptic number.

It is an amenable number.

21427261301 is a deficient number, since it is larger than the sum of its proper divisors (195649099).

21427261301 is a wasteful number, since it uses less digits than its factorization.

21427261301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296539.

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

The spelling of 21427261301 in words is "twenty-one billion, four hundred twenty-seven million, two hundred sixty-one thousand, three hundred one".