1020021100210 has 32 divisors (see below), whose sum is σ = 2098964108160. Its totient is φ = 349615688832.

The previous prime is 1020021100181. The next prime is 1020021100277. The reversal of 1020021100210 is 120011200201.

It is a super-3 number, since 3×1020021100210³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 1971675 + ... + 2434654.

It is an arithmetic number, because the mean of its divisors is an integer number (65592628380).

Almost surely, 2^{1020021100210} is an apocalyptic number.

1020021100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020021100210 is an abundant number, since it is smaller than the sum of its proper divisors (1078943007950).

1020021100210 is a wasteful number, since it uses less digits than its factorization.

1020021100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4409650.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1020021100210 its reverse (120011200201), we get a palindrome (1140032300411).

Subtracting from 1020021100210 its reverse (120011200201), we obtain a palindrome (900009900009).

The spelling of 1020021100210 in words is "one trillion, twenty billion, twenty-one million, one hundred thousand, two hundred ten".