1010120221111 has 4 divisors (see below), whose sum is σ = 1013960982672. Its totient is φ = 1006279459552.

The previous prime is 1010120221093. The next prime is 1010120221147. The reversal of 1010120221111 is 1111220210101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1010120221111 - 2⁵ = 1010120221079 is a prime.

It is a super-4 number, since 4×1010120221111⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010120221091 and 1010120221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010120221151) 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, 1920380386 + ... + 1920380911.

It is an arithmetic number, because the mean of its divisors is an integer number (253490245668).

Almost surely, 2^{1010120221111} is an apocalyptic number.

1010120221111 is a deficient number, since it is larger than the sum of its proper divisors (3840761561).

1010120221111 is an equidigital number, since it uses as much as digits as its factorization.

1010120221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840761560.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1010120221111 its reverse (1111220210101), we get a palindrome (2121340431212).

The spelling of 1010120221111 in words is "one trillion, ten billion, one hundred twenty million, two hundred twenty-one thousand, one hundred eleven".