2121011110010 has 16 divisors (see below), whose sum is σ = 4111498459656. Its totient is φ = 783142563648.

The previous prime is 2121011109937. The next prime is 2121011110019. The reversal of 2121011110010 is 100111101212.

It can be written as a sum of positive squares in 4 ways, for example, as 1010143593481 + 1110867516529 = 1005059^2 + 1053977^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121011109973 and 2121011110000.

It is not an unprimeable number, because it can be changed into a prime (2121011110019) 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, 8157734909 + ... + 8157735168.

Almost surely, 2^{2121011110010} is an apocalyptic number.

2121011110010 is a deficient number, since it is larger than the sum of its proper divisors (1990487349646).

2121011110010 is a wasteful number, since it uses less digits than its factorization.

2121011110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16315470097.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2121011110010 its reverse (100111101212), we get a palindrome (2221122211222).

The spelling of 2121011110010 in words is "two trillion, one hundred twenty-one billion, eleven million, one hundred ten thousand, ten".