102021021110 has 32 divisors (see below), whose sum is σ = 191645472960. Its totient is φ = 39029367168.

The previous prime is 102021021101. The next prime is 102021021121. The reversal of 102021021110 is 11120120201.

It is a junction number, because it is equal to n+sod(n) for n = 102021021091 and 102021021100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2293844 + ... + 2337896.

It is an arithmetic number, because the mean of its divisors is an integer number (5988921030).

Almost surely, 2^102021021110 is an apocalyptic number.

102021021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021021110 is a deficient number, since it is larger than the sum of its proper divisors (89624451850).

102021021110 is a wasteful number, since it uses less digits than its factorization.

102021021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54152.

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

Adding to 102021021110 its reverse (11120120201), we get a palindrome (113141141311).

Subtracting from 102021021110 its reverse (11120120201), we obtain a palindrome (90900900909).

The spelling of 102021021110 in words is "one hundred two billion, twenty-one million, twenty-one thousand, one hundred ten".