215388024101 has 2 divisors, whose sum is σ = 215388024102. Its totient is φ = 215388024100.

The previous prime is 215388024079. The next prime is 215388024109. The reversal of 215388024101 is 101420883512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215212488100 + 175536001 = 463910^2 + 13249^2 .

It is a cyclic number.

It is not a de Polignac number, because 215388024101 - 2¹⁴ = 215388007717 is a prime.

It is a super-2 number, since 2×215388024101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215388024109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107694012050 + 107694012051.

It is an arithmetic number, because the mean of its divisors is an integer number (107694012051).

Almost surely, 2^215388024101 is an apocalyptic number.

It is an amenable number.

215388024101 is a deficient number, since it is larger than the sum of its proper divisors (1).

215388024101 is an equidigital number, since it uses as much as digits as its factorization.

215388024101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 215388024101 in words is "two hundred fifteen billion, three hundred eighty-eight million, twenty-four thousand, one hundred one".