102121432210 has 128 divisors (see below), whose sum is σ = 224307118080. Its totient is φ = 32715158784.

The previous prime is 102121432181. The next prime is 102121432211. The reversal of 102121432210 is 12234121201.

It is not an unprimeable number, because it can be changed into a prime (102121432211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54405792 + ... + 54407668.

It is an arithmetic number, because the mean of its divisors is an integer number (1752399360).

Almost surely, 2^102121432210 is an apocalyptic number.

102121432210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121432210 is an abundant number, since it is smaller than the sum of its proper divisors (122185685870).

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

102121432210 is a wasteful number, since it uses less digits than its factorization.

102121432210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 102121432210 its reverse (12234121201), we get a palindrome (114355553411).

The spelling of 102121432210 in words is "one hundred two billion, one hundred twenty-one million, four hundred thirty-two thousand, two hundred ten".