102121130 has 64 divisors (see below), whose sum is σ = 199507968. Its totient is φ = 37558080.

The previous prime is 102121109. The next prime is 102121133. The reversal of 102121130 is 31121201.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102121133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 626429 + ... + 626591.

It is an arithmetic number, because the mean of its divisors is an integer number (3117312).

Almost surely, 2^102121130 is an apocalyptic number.

102121130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 10105×10106.

102121130 is a deficient number, since it is larger than the sum of its proper divisors (97386838).

102121130 is a wasteful number, since it uses less digits than its factorization.

102121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 102121130 is about 10105.4999876305. The cubic root of 102121130 is about 467.4177536498.

Adding to 102121130 its reverse (31121201), we get a palindrome (133242331).

The spelling of 102121130 in words is "one hundred two million, one hundred twenty-one thousand, one hundred thirty".