2116613262121 has 4 divisors (see below), whose sum is σ = 2117299808592. Its totient is φ = 2115926715652.

The previous prime is 2116613262097. The next prime is 2116613262131. The reversal of 2116613262121 is 1212623166112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2116613262121 - 2¹³ = 2116613253929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116613262131) 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, 343268611 + ... + 343274776.

It is an arithmetic number, because the mean of its divisors is an integer number (529324952148).

Almost surely, 2^{2116613262121} is an apocalyptic number.

It is an amenable number.

2116613262121 is a deficient number, since it is larger than the sum of its proper divisors (686546471).

2116613262121 is an equidigital number, since it uses as much as digits as its factorization.

2116613262121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686546470.

The product of its digits is 10368, while the sum is 34.

The spelling of 2116613262121 in words is "two trillion, one hundred sixteen billion, six hundred thirteen million, two hundred sixty-two thousand, one hundred twenty-one".