1002101212157 has 2 divisors, whose sum is σ = 1002101212158. Its totient is φ = 1002101212156.

The previous prime is 1002101212097. The next prime is 1002101212169. The reversal of 1002101212157 is 7512121012001.

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., 907258155001 + 94843057156 = 952501^2 + 307966^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002101212157 - 2⁸ = 1002101211901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002101232157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501050606078 + 501050606079.

It is an arithmetic number, because the mean of its divisors is an integer number (501050606079).

Almost surely, 2^{1002101212157} is an apocalyptic number.

It is an amenable number.

1002101212157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002101212157 is an equidigital number, since it uses as much as digits as its factorization.

1002101212157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 1002101212157 its reverse (7512121012001), we get a palindrome (8514222224158).

The spelling of 1002101212157 in words is "one trillion, two billion, one hundred one million, two hundred twelve thousand, one hundred fifty-seven".