121012442153 has 2 divisors, whose sum is σ = 121012442154. Its totient is φ = 121012442152.

The previous prime is 121012442107. The next prime is 121012442171. The reversal of 121012442153 is 351244210121.

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., 88368263824 + 32644178329 = 297268^2 + 180677^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012442153 - 2²⁰ = 121011393577 is a prime.

It is a super-2 number, since 2×121012442153² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (121012442953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506221076 + 60506221077.

It is an arithmetic number, because the mean of its divisors is an integer number (60506221077).

Almost surely, 2^121012442153 is an apocalyptic number.

It is an amenable number.

121012442153 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012442153 is an equidigital number, since it uses as much as digits as its factorization.

121012442153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 121012442153 its reverse (351244210121), we get a palindrome (472256652274).

The spelling of 121012442153 in words is "one hundred twenty-one billion, twelve million, four hundred forty-two thousand, one hundred fifty-three".