2120001211618 has 16 divisors (see below), whose sum is σ = 3212891458560. Its totient is φ = 1049038114176.

The previous prime is 2120001211613. The next prime is 2120001211619. The reversal of 2120001211618 is 8161121000212.

It is a junction number, because it is equal to n+sod(n) for n = 2120001211592 and 2120001211601.

It is not an unprimeable number, because it can be changed into a prime (2120001211613) 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, 6307855 + ... + 6635437.

It is an arithmetic number, because the mean of its divisors is an integer number (200805716160).

Almost surely, 2^{2120001211618} is an apocalyptic number.

2120001211618 is a deficient number, since it is larger than the sum of its proper divisors (1092890246942).

2120001211618 is a wasteful number, since it uses less digits than its factorization.

2120001211618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361041.

The product of its (nonzero) digits is 384, while the sum is 25.

The spelling of 2120001211618 in words is "two trillion, one hundred twenty billion, one million, two hundred eleven thousand, six hundred eighteen".