101302120421 has 2 divisors, whose sum is σ = 101302120422. Its totient is φ = 101302120420.

The previous prime is 101302120397. The next prime is 101302120427. The reversal of 101302120421 is 124021203101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95920284100 + 5381836321 = 309710^2 + 73361^2 .

It is a cyclic number.

It is not a de Polignac number, because 101302120421 - 2¹⁰ = 101302119397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101302120421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101302120427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50651060210 + 50651060211.

It is an arithmetic number, because the mean of its divisors is an integer number (50651060211).

Almost surely, 2^101302120421 is an apocalyptic number.

It is an amenable number.

101302120421 is a deficient number, since it is larger than the sum of its proper divisors (1).

101302120421 is an equidigital number, since it uses as much as digits as its factorization.

101302120421 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 17.

Adding to 101302120421 its reverse (124021203101), we get a palindrome (225323323522).

The spelling of 101302120421 in words is "one hundred one billion, three hundred two million, one hundred twenty thousand, four hundred twenty-one".