2121110101010 has 8 divisors (see below), whose sum is σ = 3817998181836. Its totient is φ = 848444040400.

The previous prime is 2121110101001. The next prime is 2121110101051. The reversal of 2121110101010 is 101010111212.

It can be written as a sum of positive squares in 2 ways, for example, as 1917275007649 + 203835093361 = 1384657^2 + 451481^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2121110100982 and 2121110101000.

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, 106055505041 + ... + 106055505060.

Almost surely, 2^{2121110101010} is an apocalyptic number.

2121110101010 is a deficient number, since it is larger than the sum of its proper divisors (1696888080826).

2121110101010 is a wasteful number, since it uses less digits than its factorization.

2121110101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212111010108.

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

Adding to 2121110101010 its reverse (101010111212), we get a palindrome (2222120212222).

The spelling of 2121110101010 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, one hundred one thousand, ten".