21141131212001 has 16 divisors (see below), whose sum is σ = 21661973738496. Its totient is φ = 20623265954496.

The previous prime is 21141131211997. The next prime is 21141131212009. The reversal of 21141131212001 is 10021213114112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21141131212001 - 2² = 21141131211997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21141131212009) 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, 115032755 + ... + 115216391.

It is an arithmetic number, because the mean of its divisors is an integer number (1353873358656).

Almost surely, 2^{21141131212001} is an apocalyptic number.

It is an amenable number.

21141131212001 is a deficient number, since it is larger than the sum of its proper divisors (520842526495).

21141131212001 is a wasteful number, since it uses less digits than its factorization.

21141131212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191728.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 21141131212001 its reverse (10021213114112), we get a palindrome (31162344326113).

The spelling of 21141131212001 in words is "twenty-one trillion, one hundred forty-one billion, one hundred thirty-one million, two hundred twelve thousand, one".