102021221210 has 32 divisors (see below), whose sum is σ = 191648961792. Its totient is φ = 39028809600.

The previous prime is 102021221171. The next prime is 102021221213. The reversal of 102021221210 is 12122120201.

It is not an unprimeable number, because it can be changed into a prime (102021221213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1900235 + ... + 1953185.

It is an arithmetic number, because the mean of its divisors is an integer number (5989030056).

Almost surely, 2^102021221210 is an apocalyptic number.

102021221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021221210 is a deficient number, since it is larger than the sum of its proper divisors (89627740582).

102021221210 is a wasteful number, since it uses less digits than its factorization.

102021221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61358.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102021221210 its reverse (12122120201), we get a palindrome (114143341411).

The spelling of 102021221210 in words is "one hundred two billion, twenty-one million, two hundred twenty-one thousand, two hundred ten".