102021011210 has 8 divisors (see below), whose sum is σ = 183637820196. Its totient is φ = 40808404480.

The previous prime is 102021011203. The next prime is 102021011219. The reversal of 102021011210 is 12110120201.

It can be written as a sum of positive squares in 2 ways, for example, as 93974741809 + 8046269401 = 306553^2 + 89701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 102021011191 and 102021011200.

It is not an unprimeable number, because it can be changed into a prime (102021011219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101050551 + ... + 5101050570.

Almost surely, 2^102021011210 is an apocalyptic number.

102021011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021011210 is a deficient number, since it is larger than the sum of its proper divisors (81616808986).

102021011210 is a wasteful number, since it uses less digits than its factorization.

102021011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202101128.

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

Adding to 102021011210 its reverse (12110120201), we get a palindrome (114131131411).

The spelling of 102021011210 in words is "one hundred two billion, twenty-one million, eleven thousand, two hundred ten".