21233312034 has 32 divisors (see below), whose sum is σ = 46611465984. Its totient is φ = 6394859280.

The previous prime is 21233311973. The next prime is 21233312053. The reversal of 21233312034 is 43021333212.

It is a junction number, because it is equal to n+sod(n) for n = 21233311995 and 21233312013.

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, 976104 + ... + 997619.

It is an arithmetic number, because the mean of its divisors is an integer number (1456608312).

Almost surely, 2^21233312034 is an apocalyptic number.

21233312034 is an abundant number, since it is smaller than the sum of its proper divisors (25378153950).

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

21233312034 is a wasteful number, since it uses less digits than its factorization.

21233312034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973902.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21233312034 its reverse (43021333212), we get a palindrome (64254645246).

The spelling of 21233312034 in words is "twenty-one billion, two hundred thirty-three million, three hundred twelve thousand, thirty-four".