21010333434 has 16 divisors (see below), whose sum is σ = 43847652672. Its totient is φ = 6698946848.

The previous prime is 21010333427. The next prime is 21010333441. The reversal of 21010333434 is 43433301012.

It is an interprime number because it is at equal distance from previous prime (21010333427) and next prime (21010333441).

It is a super-2 number, since 2×21010333434² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76124259 + ... + 76124534.

It is an arithmetic number, because the mean of its divisors is an integer number (2740478292).

Almost surely, 2^21010333434 is an apocalyptic number.

21010333434 is an abundant number, since it is smaller than the sum of its proper divisors (22837319238).

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

21010333434 is a wasteful number, since it uses less digits than its factorization.

21010333434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152248821.

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

Adding to 21010333434 its reverse (43433301012), we get a palindrome (64443634446).

The spelling of 21010333434 in words is "twenty-one billion, ten million, three hundred thirty-three thousand, four hundred thirty-four".