2102434244421 has 64 divisors (see below), whose sum is σ = 3456587520000. Its totient is φ = 1109323063296.

The previous prime is 2102434244411. The next prime is 2102434244497. The reversal of 2102434244421 is 1244424342012.

It is not a de Polignac number, because 2102434244421 - 2¹³ = 2102434236229 is a prime.

It is a super-2 number, since 2×2102434244421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102434244401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10410421 + ... + 10610453.

It is an arithmetic number, because the mean of its divisors is an integer number (54009180000).

Almost surely, 2^{2102434244421} is an apocalyptic number.

2102434244421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2102434244421 is a deficient number, since it is larger than the sum of its proper divisors (1354153275579).

2102434244421 is a wasteful number, since it uses less digits than its factorization.

2102434244421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200618.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 2102434244421 its reverse (1244424342012), we get a palindrome (3346858586433).

The spelling of 2102434244421 in words is "two trillion, one hundred two billion, four hundred thirty-four million, two hundred forty-four thousand, four hundred twenty-one".