101210632381 has 2 divisors, whose sum is σ = 101210632382. Its totient is φ = 101210632380.

The previous prime is 101210632349. The next prime is 101210632433. The reversal of 101210632381 is 183236012101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54725116356 + 46485516025 = 233934^2 + 215605^2 .

It is a cyclic number.

It is not a de Polignac number, because 101210632381 - 2⁵ = 101210632349 is a prime.

It is a super-2 number, since 2×101210632381² (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 (101210632681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605316190 + 50605316191.

It is an arithmetic number, because the mean of its divisors is an integer number (50605316191).

Almost surely, 2^101210632381 is an apocalyptic number.

It is an amenable number.

101210632381 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210632381 is an equidigital number, since it uses as much as digits as its factorization.

101210632381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 101210632381 its reverse (183236012101), we get a palindrome (284446644482).

The spelling of 101210632381 in words is "one hundred one billion, two hundred ten million, six hundred thirty-two thousand, three hundred eighty-one".