121013201230157 has 2 divisors, whose sum is σ = 121013201230158. Its totient is φ = 121013201230156.

The previous prime is 121013201230079. The next prime is 121013201230183. The reversal of 121013201230157 is 751032102310121.

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., 79440249881476 + 41572951348681 = 8912926^2 + 6447709^2 .

It is a cyclic number.

It is not a de Polignac number, because 121013201230157 - 2⁴² = 116615154719053 is a prime.

It is a super-3 number, since 3×121013201230157³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121013201280157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506600615078 + 60506600615079.

It is an arithmetic number, because the mean of its divisors is an integer number (60506600615079).

Almost surely, 2^{121013201230157} is an apocalyptic number.

It is an amenable number.

121013201230157 is a deficient number, since it is larger than the sum of its proper divisors (1).

121013201230157 is an equidigital number, since it uses as much as digits as its factorization.

121013201230157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

Adding to 121013201230157 its reverse (751032102310121), we get a palindrome (872045303540278).

The spelling of 121013201230157 in words is "one hundred twenty-one trillion, thirteen billion, two hundred one million, two hundred thirty thousand, one hundred fifty-seven".