1020021112110 has 768 divisors, whose sum is σ = 3608144870400. Its totient is φ = 180801331200.

The previous prime is 1020021112063. The next prime is 1020021112157. The reversal of 1020021112110 is 112111200201.

It is an interprime number because it is at equal distance from previous prime (1020021112063) and next prime (1020021112157).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 163750476 + ... + 163756704.

It is an arithmetic number, because the mean of its divisors is an integer number (4698105300).

Almost surely, 2^{1020021112110} is an apocalyptic number.

1020021112110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020021112110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1804072435200).

1020021112110 is an abundant number, since it is smaller than the sum of its proper divisors (2588123758290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020021112110 is a wasteful number, since it uses less digits than its factorization.

1020021112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6337 (or 6330 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1020021112110 its reverse (112111200201), we get a palindrome (1132132312311).

The spelling of 1020021112110 in words is "one trillion, twenty billion, twenty-one million, one hundred twelve thousand, one hundred ten".