21411231101 has 16 divisors (see below), whose sum is σ = 23602301184. Its totient is φ = 19298188224.

The previous prime is 21411231097. The next prime is 21411231103. The reversal of 21411231101 is 10113211412.

It is a cyclic number.

It is not a de Polignac number, because 21411231101 - 2² = 21411231097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21411231101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411231103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2767100 + ... + 2774826.

It is an arithmetic number, because the mean of its divisors is an integer number (1475143824).

Almost surely, 2^21411231101 is an apocalyptic number.

It is an amenable number.

21411231101 is a deficient number, since it is larger than the sum of its proper divisors (2191070083).

21411231101 is a wasteful number, since it uses less digits than its factorization.

21411231101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12740.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21411231101 its reverse (10113211412), we get a palindrome (31524442513).

The spelling of 21411231101 in words is "twenty-one billion, four hundred eleven million, two hundred thirty-one thousand, one hundred one".