1020021121210 has 32 divisors (see below), whose sum is σ = 2259739101312. Its totient is φ = 322819871040.

The previous prime is 1020021121129. The next prime is 1020021121237. The reversal of 1020021121210 is 121211200201.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 560450256 + ... + 560452075.

It is an arithmetic number, because the mean of its divisors is an integer number (70616846916).

Almost surely, 2^{1020021121210} is an apocalyptic number.

1020021121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020021121210 is an abundant number, since it is smaller than the sum of its proper divisors (1239717980102).

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

1020021121210 is a wasteful number, since it uses less digits than its factorization.

1020021121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120902358.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020021121210 its reverse (121211200201), we get a palindrome (1141232321411).

The spelling of 1020021121210 in words is "one trillion, twenty billion, twenty-one million, one hundred twenty-one thousand, two hundred ten".