2123421330 has 32 divisors (see below), whose sum is σ = 5112310464. Its totient is φ = 564456896.

The previous prime is 2123421271. The next prime is 2123421359. The reversal of 2123421330 is 331243212.

It is a junction number, because it is equal to n+sod(n) for n = 2123421297 and 2123421306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102132 + ... + 121151.

It is an arithmetic number, because the mean of its divisors is an integer number (159759702).

Almost surely, 2^2123421330 is an apocalyptic number.

2123421330 is an abundant number, since it is smaller than the sum of its proper divisors (2988889134).

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

2123421330 is a wasteful number, since it uses less digits than its factorization.

2123421330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223610.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2123421330 is about 46080.5960247912. The cubic root of 2123421330 is about 1285.3223474293.

Adding to 2123421330 its reverse (331243212), we get a palindrome (2454664542).

The spelling of 2123421330 in words is "two billion, one hundred twenty-three million, four hundred twenty-one thousand, three hundred thirty".