21020202201010 has 8 divisors (see below), whose sum is σ = 37836363961836. Its totient is φ = 8408080880400.

The previous prime is 21020202201007. The next prime is 21020202201049. The reversal of 21020202201010 is 1010220202012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20365751942649 + 654450258361 = 4512843^2 + 808981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051010110041 + ... + 1051010110060.

Almost surely, 2^{21020202201010} is an apocalyptic number.

21020202201010 is a deficient number, since it is larger than the sum of its proper divisors (16816161760826).

21020202201010 is a wasteful number, since it uses less digits than its factorization.

21020202201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102020220108.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21020202201010 its reverse (1010220202012), we get a palindrome (22030422403022).

The spelling of 21020202201010 in words is "twenty-one trillion, twenty billion, two hundred two million, two hundred one thousand, ten".