20021200420034 has 32 divisors (see below), whose sum is σ = 32846358988800. Its totient is φ = 9077125755600.

The previous prime is 20021200420007. The next prime is 20021200420057. The reversal of 20021200420034 is 43002400212002.

It is a super-2 number, since 2×20021200420034² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021200419988 and 20021200420015.

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, 16809767 + ... + 17961365.

It is an arithmetic number, because the mean of its divisors is an integer number (1026448718400).

Almost surely, 2^{20021200420034} is an apocalyptic number.

20021200420034 is a deficient number, since it is larger than the sum of its proper divisors (12825158568766).

20021200420034 is a wasteful number, since it uses less digits than its factorization.

20021200420034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153646.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20021200420034 its reverse (43002400212002), we get a palindrome (63023600632036).

The spelling of 20021200420034 in words is "twenty trillion, twenty-one billion, two hundred million, four hundred twenty thousand, thirty-four".