2021121011210 has 64 divisors (see below), whose sum is σ = 4164962457600. Its totient is φ = 691752019200.

The previous prime is 2021121011099. The next prime is 2021121011213. The reversal of 2021121011210 is 121101211202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2021121011213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133832660 + ... + 133847760.

It is an arithmetic number, because the mean of its divisors is an integer number (65077538400).

Almost surely, 2^{2021121011210} is an apocalyptic number.

2021121011210 is an abundant number, since it is smaller than the sum of its proper divisors (2143841446390).

2021121011210 is a wasteful number, since it uses less digits than its factorization.

2021121011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18311.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2021121011210 its reverse (121101211202), we get a palindrome (2142222222412).

The spelling of 2021121011210 in words is "two trillion, twenty-one billion, one hundred twenty-one million, eleven thousand, two hundred ten".