1012201001021 has 16 divisors (see below), whose sum is σ = 1171500019200. Its totient is φ = 856577749248.

The previous prime is 1012201001011. The next prime is 1012201001023. The reversal of 1012201001021 is 1201001022101.

It is a cyclic number.

It is not a de Polignac number, because 1012201001021 - 2³⁴ = 995021131837 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1012201000993 and 1012201001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012201001023) 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, 19413575 + ... + 19465643.

It is an arithmetic number, because the mean of its divisors is an integer number (73218751200).

Almost surely, 2^{1012201001021} is an apocalyptic number.

It is an amenable number.

1012201001021 is a deficient number, since it is larger than the sum of its proper divisors (159299018179).

1012201001021 is an equidigital number, since it uses as much as digits as its factorization.

1012201001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87308.

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

Adding to 1012201001021 its reverse (1201001022101), we get a palindrome (2213202023122).

The spelling of 1012201001021 in words is "one trillion, twelve billion, two hundred one million, one thousand, twenty-one".