2010221332121 has 4 divisors (see below), whose sum is σ = 2012060511012. Its totient is φ = 2008382153232.

The previous prime is 2010221332069. The next prime is 2010221332211. The reversal of 2010221332121 is 1212331220102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1860943418896 + 149277913225 = 1364164^2 + 386365^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010221332121 - 2²⁶ = 2010154223257 is a prime.

It is a super-2 number, since 2×2010221332121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010221332093 and 2010221332102.

It is not an unprimeable number, because it can be changed into a prime (2010221322121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919587806 + ... + 919589991.

It is an arithmetic number, because the mean of its divisors is an integer number (503015127753).

Almost surely, 2^{2010221332121} is an apocalyptic number.

It is an amenable number.

2010221332121 is a deficient number, since it is larger than the sum of its proper divisors (1839178891).

2010221332121 is a wasteful number, since it uses less digits than its factorization.

2010221332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839178890.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2010221332121 its reverse (1212331220102), we get a palindrome (3222552552223).

The spelling of 2010221332121 in words is "two trillion, ten billion, two hundred twenty-one million, three hundred thirty-two thousand, one hundred twenty-one".