121530102051 has 16 divisors (see below), whose sum is σ = 164030719104. Its totient is φ = 80025232704.

The previous prime is 121530101947. The next prime is 121530102053. The reversal of 121530102051 is 150201035121.

It is not a de Polignac number, because 121530102051 - 2¹⁴ = 121530085667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121530102053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055040 + ... + 1164546.

It is an arithmetic number, because the mean of its divisors is an integer number (10251919944).

Almost surely, 2^121530102051 is an apocalyptic number.

121530102051 is a deficient number, since it is larger than the sum of its proper divisors (42500617053).

121530102051 is a wasteful number, since it uses less digits than its factorization.

121530102051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114050.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 121530102051 its reverse (150201035121), we get a palindrome (271731137172).

The spelling of 121530102051 in words is "one hundred twenty-one billion, five hundred thirty million, one hundred two thousand, fifty-one".