1010012020121 has 16 divisors (see below), whose sum is σ = 1092500018064. Its totient is φ = 928209921024.

The previous prime is 1010012020099. The next prime is 1010012020123. The reversal of 1010012020121 is 1210202100101.

It can be written as a sum of positive squares in 8 ways, for example, as 280226244496 + 729785775625 = 529364^2 + 854275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010012020121 - 2⁶ = 1010012020057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1010012020123) 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, 39476285 + ... + 39501861.

It is an arithmetic number, because the mean of its divisors is an integer number (68281251129).

Almost surely, 2^{1010012020121} is an apocalyptic number.

It is an amenable number.

1010012020121 is a deficient number, since it is larger than the sum of its proper divisors (82487997943).

1010012020121 is a wasteful number, since it uses less digits than its factorization.

1010012020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38860.

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

Adding to 1010012020121 its reverse (1210202100101), we get a palindrome (2220214120222).

The spelling of 1010012020121 in words is "one trillion, ten billion, twelve million, twenty thousand, one hundred twenty-one".