21020210020034 has 16 divisors (see below), whose sum is σ = 31552788453120. Its totient is φ = 10502614213200.

The previous prime is 21020210019971. The next prime is 21020210020057. The reversal of 21020210020034 is 43002001202012.

It is a super-2 number, since 2×21020210020034² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21020210019994 and 21020210020021.

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, 229876847 + ... + 229968269.

It is an arithmetic number, because the mean of its divisors is an integer number (1972049278320).

Almost surely, 2^{21020210020034} is an apocalyptic number.

21020210020034 is a deficient number, since it is larger than the sum of its proper divisors (10532578433086).

21020210020034 is a wasteful number, since it uses less digits than its factorization.

21020210020034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172105.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21020210020034 its reverse (43002001202012), we get a palindrome (64022211222046).

The spelling of 21020210020034 in words is "twenty-one trillion, twenty billion, two hundred ten million, twenty thousand, thirty-four".