21227135141 has 8 divisors (see below), whose sum is σ = 22352220000. Its totient is φ = 20102837040.

The previous prime is 21227135107. The next prime is 21227135147. The reversal of 21227135141 is 14153172212.

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-21227135141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21227135147) 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, 140891 + ... + 249608.

It is an arithmetic number, because the mean of its divisors is an integer number (2794027500).

Almost surely, 2^21227135141 is an apocalyptic number.

It is an amenable number.

21227135141 is a deficient number, since it is larger than the sum of its proper divisors (1125084859).

21227135141 is a wasteful number, since it uses less digits than its factorization.

21227135141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393379.

The product of its digits is 3360, while the sum is 29.

The spelling of 21227135141 in words is "twenty-one billion, two hundred twenty-seven million, one hundred thirty-five thousand, one hundred forty-one".