155230033121 has 8 divisors (see below), whose sum is σ = 157042535400. Its totient is φ = 153422934400.

The previous prime is 155230033103. The next prime is 155230033139. The reversal of 155230033121 is 121330032551.

It is an interprime number because it is at equal distance from previous prime (155230033103) and next prime (155230033139).

It can be written as a sum of positive squares in 4 ways, for example, as 69465982096 + 85764051025 = 263564^2 + 292855^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155230033121 - 2¹⁴ = 155230016737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155230033151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293086 + ... + 1408023.

It is an arithmetic number, because the mean of its divisors is an integer number (19630316925).

Almost surely, 2^155230033121 is an apocalyptic number.

It is an amenable number.

155230033121 is a deficient number, since it is larger than the sum of its proper divisors (1812502279).

155230033121 is a wasteful number, since it uses less digits than its factorization.

155230033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701779.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 155230033121 its reverse (121330032551), we get a palindrome (276560065672).

The spelling of 155230033121 in words is "one hundred fifty-five billion, two hundred thirty million, thirty-three thousand, one hundred twenty-one".