102011021210 has 64 divisors (see below), whose sum is σ = 212020727040. Its totient is φ = 34614274560.

The previous prime is 102011021207. The next prime is 102011021213. The reversal of 102011021210 is 12120110201.

It is an interprime number because it is at equal distance from previous prime (102011021207) and next prime (102011021213).

It is a junction number, because it is equal to n+sod(n) for n = 102011021191 and 102011021200.

It is not an unprimeable number, because it can be changed into a prime (102011021213) 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, 8300270 + ... + 8312550.

It is an arithmetic number, because the mean of its divisors is an integer number (3312823860).

Almost surely, 2^102011021210 is an apocalyptic number.

102011021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102011021210 is an abundant number, since it is smaller than the sum of its proper divisors (110009705830).

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

102011021210 is a wasteful number, since it uses less digits than its factorization.

102011021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13511.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102011021210 its reverse (12120110201), we get a palindrome (114131131411).

The spelling of 102011021210 in words is "one hundred two billion, eleven million, twenty-one thousand, two hundred ten".