2111652421 has 8 divisors (see below), whose sum is σ = 2155442400. Its totient is φ = 2068129200.

The previous prime is 2111652409. The next prime is 2111652469. The reversal of 2111652421 is 1242561112.

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 2111652421 - 2⁷ = 2111652293 is a prime.

It is a super-2 number, since 2×2111652421² = 8918151894230322482, which contains 22 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 (2111652721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50655 + ... + 82396.

It is an arithmetic number, because the mean of its divisors is an integer number (269430300).

Almost surely, 2^2111652421 is an apocalyptic number.

It is an amenable number.

2111652421 is a deficient number, since it is larger than the sum of its proper divisors (43789979).

2111652421 is a wasteful number, since it uses less digits than its factorization.

2111652421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133379.

The product of its digits is 960, while the sum is 25.

The square root of 2111652421 is about 45952.7194081047. The cubic root of 2111652421 is about 1282.9433448304.

It can be divided in two parts, 21116 and 52421, that added together give a palindrome (73537).

The spelling of 2111652421 in words is "two billion, one hundred eleven million, six hundred fifty-two thousand, four hundred twenty-one".