1012233116621 has 8 divisors (see below), whose sum is σ = 1027996035384. Its totient is φ = 996521460480.

The previous prime is 1012233116599. The next prime is 1012233116647. The reversal of 1012233116621 is 1266113322101.

It can be written as a sum of positive squares in 4 ways, for example, as 140689507396 + 871543609225 = 375086^2 + 933565^2 .

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 1012233116621 - 2³⁴ = 995053247437 is a prime.

It is a super-3 number, since 3×1012233116621³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012233119621) 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, 12775856 + ... + 12854841.

It is an arithmetic number, because the mean of its divisors is an integer number (128499504423).

Almost surely, 2^{1012233116621} is an apocalyptic number.

It is an amenable number.

1012233116621 is a deficient number, since it is larger than the sum of its proper divisors (15762918763).

1012233116621 is an equidigital number, since it uses as much as digits as its factorization.

1012233116621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25631311.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 1012233116621 its reverse (1266113322101), we get a palindrome (2278346438722).

The spelling of 1012233116621 in words is "one trillion, twelve billion, two hundred thirty-three million, one hundred sixteen thousand, six hundred twenty-one".