102121002 has 24 divisors (see below), whose sum is σ = 221528736. Its totient is φ = 33999336.

The previous prime is 102120929. The next prime is 102121007. The reversal of 102121002 is 200121201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (102121007) 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 11 ways as a sum of consecutive naturals, for example, 14473 + ... + 20339.

It is an arithmetic number, because the mean of its divisors is an integer number (9230364).

Almost surely, 2^102121002 is an apocalyptic number.

102121002 is an abundant number, since it is smaller than the sum of its proper divisors (119407734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102121002 is a wasteful number, since it uses less digits than its factorization.

102121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6842 (or 6839 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 102121002 is about 10105.4936544436. The cubic root of 102121002 is about 467.4175583605.

Adding to 102121002 its reverse (200121201), we get a palindrome (302242203).

It can be divided in two parts, 102 and 121002, that added together give a square (121104 = 348²).

The spelling of 102121002 in words is "one hundred two million, one hundred twenty-one thousand, two".