1010111202121 has 6 divisors (see below), whose sum is σ = 1175027316810. Its totient is φ = 865809601776.

The previous prime is 1010111202109. The next prime is 1010111202161. The reversal of 1010111202121 is 1212021110101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 863375472400 + 146735729721 = 929180^2 + 383061^2 .

It is not a de Polignac number, because 1010111202121 - 2¹³ = 1010111193929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010111202161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10307257116 + ... + 10307257213.

It is an arithmetic number, because the mean of its divisors is an integer number (195837886135).

Almost surely, 2^{1010111202121} is an apocalyptic number.

It is an amenable number.

1010111202121 is a deficient number, since it is larger than the sum of its proper divisors (164916114689).

1010111202121 is an equidigital number, since it uses as much as digits as its factorization.

1010111202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20614514343 (or 20614514336 counting only the distinct ones).

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

Adding to 1010111202121 its reverse (1212021110101), we get a palindrome (2222132312222).

The spelling of 1010111202121 in words is "one trillion, ten billion, one hundred eleven million, two hundred two thousand, one hundred twenty-one".