21141111102 has 32 divisors (see below), whose sum is σ = 44522332800. Its totient is φ = 6673930848.

The previous prime is 21141111091. The next prime is 21141111133. The reversal of 21141111102 is 20111114112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334224 + ... + 392412.

It is an arithmetic number, because the mean of its divisors is an integer number (1391322900).

Almost surely, 2^21141111102 is an apocalyptic number.

21141111102 is an abundant number, since it is smaller than the sum of its proper divisors (23381221698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21141111102 is a wasteful number, since it uses less digits than its factorization.

21141111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61400.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21141111102 its reverse (20111114112), we get a palindrome (41252225214).

The spelling of 21141111102 in words is "twenty-one billion, one hundred forty-one million, one hundred eleven thousand, one hundred two".