102121029 has 24 divisors (see below), whose sum is σ = 156104000. Its totient is φ = 64152000.

The previous prime is 102121027. The next prime is 102121031. The reversal of 102121029 is 920121201.

It is an interprime number because it is at equal distance from previous prime (102121027) and next prime (102121031).

It is not a de Polignac number, because 102121029 - 2¹ = 102121027 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32529 + ... + 35529.

Almost surely, 2^102121029 is an apocalyptic number.

102121029 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

102121029 is a deficient number, since it is larger than the sum of its proper divisors (53982971).

102121029 is a wasteful number, since it uses less digits than its factorization.

102121029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225 (or 3222 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 102121029 is about 10105.4949903505. The cubic root of 102121029 is about 467.4175995544.

The spelling of 102121029 in words is "one hundred two million, one hundred twenty-one thousand, twenty-nine".