1201012101021 has 32 divisors (see below), whose sum is σ = 1635915657600. Its totient is φ = 783581004800.

The previous prime is 1201012100983. The next prime is 1201012101031.

1201012101021 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1201012101021 - 2¹⁴ = 1201012084637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1201012100988 and 1201012101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201012101031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114847225 + ... + 114857681.

It is an arithmetic number, because the mean of its divisors is an integer number (51122364300).

Almost surely, 2^{1201012101021} is an apocalyptic number.

It is an amenable number.

1201012101021 is a deficient number, since it is larger than the sum of its proper divisors (434903556579).

1201012101021 is a wasteful number, since it uses less digits than its factorization.

1201012101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14909.

The product of its (nonzero) digits is 8, while the sum is 12.

The spelling of 1201012101021 in words is "one trillion, two hundred one billion, twelve million, one hundred one thousand, twenty-one".