1012112021211 has 4 divisors (see below), whose sum is σ = 1349482694952. Its totient is φ = 674741347472.

The previous prime is 1012112021159. The next prime is 1012112021213. The reversal of 1012112021211 is 1121202112101.

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 1012112021211 - 2¹³ = 1012112013019 is a prime.

It is a super-3 number, since 3×1012112021211³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1012112021213) 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, 168685336866 + ... + 168685336871.

It is an arithmetic number, because the mean of its divisors is an integer number (337370673738).

Almost surely, 2^{1012112021211} is an apocalyptic number.

1012112021211 is a deficient number, since it is larger than the sum of its proper divisors (337370673741).

1012112021211 is an equidigital number, since it uses as much as digits as its factorization.

1012112021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337370673740.

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

Adding to 1012112021211 its reverse (1121202112101), we get a palindrome (2133314133312).

The spelling of 1012112021211 in words is "one trillion, twelve billion, one hundred twelve million, twenty-one thousand, two hundred eleven".