20213366234 has 16 divisors (see below), whose sum is σ = 30969478656. Its totient is φ = 9890266800.

The previous prime is 20213366233. The next prime is 20213366237. The reversal of 20213366234 is 43266331202.

It is a super-2 number, since 2×20213366234² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20213366234.

It is not an unprimeable number, because it can be changed into a prime (20213366233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102079 + ... + 1120269.

It is an arithmetic number, because the mean of its divisors is an integer number (1935592416).

Almost surely, 2^20213366234 is an apocalyptic number.

20213366234 is a deficient number, since it is larger than the sum of its proper divisors (10756112422).

20213366234 is a wasteful number, since it uses less digits than its factorization.

20213366234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30061.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 20213366234 its reverse (43266331202), we get a palindrome (63479697436).

The spelling of 20213366234 in words is "twenty billion, two hundred thirteen million, three hundred sixty-six thousand, two hundred thirty-four".