1012121211021 has 8 divisors (see below), whose sum is σ = 1366577162880. Its totient is φ = 666206366592.

The previous prime is 1012121211011. The next prime is 1012121211041. The reversal of 1012121211021 is 1201121212101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012121211021 - 2⁹ = 1012121210509 is a prime.

It is a super-2 number, since 2×1012121211021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012121211001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2135276580 + ... + 2135277053.

It is an arithmetic number, because the mean of its divisors is an integer number (170822145360).

Almost surely, 2^{1012121211021} is an apocalyptic number.

It is an amenable number.

1012121211021 is a deficient number, since it is larger than the sum of its proper divisors (354455951859).

1012121211021 is an equidigital number, since it uses as much as digits as its factorization.

1012121211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270553715.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1012121211021 its reverse (1201121212101), we get a palindrome (2213242423122).

The spelling of 1012121211021 in words is "one trillion, twelve billion, one hundred twenty-one million, two hundred eleven thousand, twenty-one".