1010121212121 has 16 divisors (see below), whose sum is σ = 1540278755328. Its totient is φ = 576819709200.

The previous prime is 1010121212119. The next prime is 1010121212141. The reversal of 1010121212121 is 1212121210101.

It is a happy number.

1010121212121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 1010121212121 - 2¹ = 1010121212119 is a prime.

It is an alternating number because its digits alternate between odd and even.

1010121212121 is a modest number, since divided by 21212121 gives 10101 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1010121212121.

It is not an unprimeable number, because it can be changed into a prime (1010121212141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16318875 + ... + 16380656.

It is an arithmetic number, because the mean of its divisors is an integer number (96267422208).

Almost surely, 2^{1010121212121} is an apocalyptic number.

It is an amenable number.

1010121212121 is a deficient number, since it is larger than the sum of its proper divisors (530157543207).

1010121212121 is a wasteful number, since it uses less digits than its factorization.

1010121212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32701012.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1010121212121 its reverse (1212121210101), we get a palindrome (2222242422222).

The spelling of 1010121212121 in words is "one trillion, ten billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-one".