121030542042125 has 16 divisors (see below), whose sum is σ = 151147558014960. Its totient is φ = 96759407001600.

The previous prime is 121030542042041. The next prime is 121030542042209. The reversal of 121030542042125 is 521240245030121.

It is an interprime number because it is at equal distance from previous prime (121030542042041) and next prime (121030542042209).

It can be written as a sum of positive squares in 8 ways, for example, as 48650025151849 + 72380516890276 = 6974957^2 + 8507674^2 .

It is a de Polignac number, because none of the positive numbers 2^k-121030542042125 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121030542042091 and 121030542042100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324946292 + ... + 325318541.

It is an arithmetic number, because the mean of its divisors is an integer number (9446722375935).

Almost surely, 2^{121030542042125} is an apocalyptic number.

It is an amenable number.

121030542042125 is a deficient number, since it is larger than the sum of its proper divisors (30117015972835).

121030542042125 is an equidigital number, since it uses as much as digits as its factorization.

121030542042125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650266337 (or 650266327 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 121030542042125 its reverse (521240245030121), we get a palindrome (642270787072246).

The spelling of 121030542042125 in words is "one hundred twenty-one trillion, thirty billion, five hundred forty-two million, forty-two thousand, one hundred twenty-five".