1012111200221 has 8 divisors (see below), whose sum is σ = 1110895061664. Its totient is φ = 914456297520.

The previous prime is 1012111200211. The next prime is 1012111200227. The reversal of 1012111200221 is 1220021112101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012111200221 - 2³⁰ = 1011037458397 is a prime.

It is a super-2 number, since 2×1012111200221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1012111200196 and 1012111200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111200227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282237806 + ... + 282241391.

It is an arithmetic number, because the mean of its divisors is an integer number (138861882708).

Almost surely, 2^{1012111200221} is an apocalyptic number.

1012111200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012111200221 is a deficient number, since it is larger than the sum of its proper divisors (98783861443).

1012111200221 is a wasteful number, since it uses less digits than its factorization.

1012111200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564479371.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012111200221 its reverse (1220021112101), we get a palindrome (2232132312322).

The spelling of 1012111200221 in words is "one trillion, twelve billion, one hundred eleven million, two hundred thousand, two hundred twenty-one".