2190421332 has 48 divisors (see below), whose sum is σ = 6195134400. Its totient is φ = 663763680.

The previous prime is 2190421319. The next prime is 2190421339. The reversal of 2190421332 is 2331240912.

It is a happy number.

It is a super-2 number, since 2×2190421332² = 9595891223361308448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2190421296 and 2190421305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190421339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920707 + ... + 923082.

It is an arithmetic number, because the mean of its divisors is an integer number (129065300).

Almost surely, 2^2190421332 is an apocalyptic number.

2190421332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2190421332 is an abundant number, since it is smaller than the sum of its proper divisors (4004713068).

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

2190421332 is a wasteful number, since it uses less digits than its factorization.

2190421332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843813 (or 1843805 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2190421332 is about 46801.9372675961. The cubic root of 2190421332 is about 1298.7011350484.

The spelling of 2190421332 in words is "two billion, one hundred ninety million, four hundred twenty-one thousand, three hundred thirty-two".