21140213211101 has 2 divisors, whose sum is σ = 21140213211102. Its totient is φ = 21140213211100.

The previous prime is 21140213211079. The next prime is 21140213211109. The reversal of 21140213211101 is 10111231204112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20225797236100 + 914415975001 = 4497310^2 + 956251^2 .

It is a cyclic number.

It is not a de Polignac number, because 21140213211101 - 2¹⁸ = 21140212948957 is a prime.

It is a super-2 number, since 2×21140213211101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21140213211109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570106605550 + 10570106605551.

It is an arithmetic number, because the mean of its divisors is an integer number (10570106605551).

Almost surely, 2^{21140213211101} is an apocalyptic number.

It is an amenable number.

21140213211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21140213211101 is an equidigital number, since it uses as much as digits as its factorization.

21140213211101 is an evil number, because the sum of its binary digits is even.

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

Adding to 21140213211101 its reverse (10111231204112), we get a palindrome (31251444415213).

The spelling of 21140213211101 in words is "twenty-one trillion, one hundred forty billion, two hundred thirteen million, two hundred eleven thousand, one hundred one".