102021211220210 has 32 divisors (see below), whose sum is σ = 186677520746112. Its totient is φ = 40138589021440.

The previous prime is 102021211220153. The next prime is 102021211220321. The reversal of 102021211220210 is 12022112120201.

It is a super-2 number, since 2×102021211220210² (a number of 29 digits) contains 22 as substring.

It is a Curzon 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, 344448374 + ... + 344744433.

It is an arithmetic number, because the mean of its divisors is an integer number (5833672523316).

Almost surely, 2^{102021211220210} is an apocalyptic number.

102021211220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021211220210 is a deficient number, since it is larger than the sum of its proper divisors (84656309525902).

102021211220210 is a wasteful number, since it uses less digits than its factorization.

102021211220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689193058.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102021211220210 its reverse (12022112120201), we get a palindrome (114043323340411).

The spelling of 102021211220210 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, two hundred twenty thousand, two hundred ten".