100021200157 has 2 divisors, whose sum is σ = 100021200158. Its totient is φ = 100021200156.

The previous prime is 100021200151. The next prime is 100021200211. The reversal of 100021200157 is 751002120001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95279638276 + 4741561881 = 308674^2 + 68859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100021200157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100021200151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010600078 + 50010600079.

It is an arithmetic number, because the mean of its divisors is an integer number (50010600079).

Almost surely, 2^100021200157 is an apocalyptic number.

It is an amenable number.

100021200157 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021200157 is an equidigital number, since it uses as much as digits as its factorization.

100021200157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

Adding to 100021200157 its reverse (751002120001), we get a palindrome (851023320158).

The spelling of 100021200157 in words is "one hundred billion, twenty-one million, two hundred thousand, one hundred fifty-seven".