2121361154604 has 30 divisors (see below), whose sum is σ = 5545657093284. Its totient is φ = 707120384760.

The previous prime is 2121361154603. The next prime is 2121361154611. The reversal of 2121361154604 is 4064511631212.

2121361154604 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 36 + 1 + 15 + 4 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2121361154603) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3273705162 + ... + 3273705809.

Almost surely, 2^{2121361154604} is an apocalyptic number.

It is an amenable number.

2121361154604 is an abundant number, since it is smaller than the sum of its proper divisors (3424295938680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121361154604 is a wasteful number, since it uses less digits than its factorization.

2121361154604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6547410987 (or 6547410976 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 2121361154604 its reverse (4064511631212), we get a palindrome (6185872785816).

The spelling of 2121361154604 in words is "two trillion, one hundred twenty-one billion, three hundred sixty-one million, one hundred fifty-four thousand, six hundred four".