20101000121210 has 16 divisors (see below), whose sum is σ = 36181864377000. Its totient is φ = 8040385790976.

The previous prime is 20101000121197. The next prime is 20101000121273. The reversal of 20101000121210 is 1212100010102.

It can be written as a sum of positive squares in 4 ways, for example, as 15655704379441 + 4445295741769 = 3956729^2 + 2108387^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20101000121191 and 20101000121200.

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, 5592266 + ... + 8454314.

Almost surely, 2^{20101000121210} is an apocalyptic number.

20101000121210 is a deficient number, since it is larger than the sum of its proper divisors (16080864255790).

20101000121210 is a wasteful number, since it uses less digits than its factorization.

20101000121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564385.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20101000121210 its reverse (1212100010102), we get a palindrome (21313100131312).

The spelling of 20101000121210 in words is "twenty trillion, one hundred one billion, one hundred twenty-one thousand, two hundred ten".