1201020212021 has 16 divisors (see below), whose sum is σ = 1378990398720. Its totient is φ = 1024660143360.

The previous prime is 1201020212011. The next prime is 1201020212081. The reversal of 1201020212021 is 1202120201021.

It is not a de Polignac number, because 1201020212021 - 2²⁶ = 1200953103157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201020211987 and 1201020212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201020212011) 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, 829565 + ... + 1757901.

It is an arithmetic number, because the mean of its divisors is an integer number (86186899920).

Almost surely, 2^{1201020212021} is an apocalyptic number.

It is an amenable number.

1201020212021 is a deficient number, since it is larger than the sum of its proper divisors (177970186699).

1201020212021 is an equidigital number, since it uses as much as digits as its factorization.

1201020212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929204.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1201020212021 its reverse (1202120201021), we get a palindrome (2403140413042).

The spelling of 1201020212021 in words is "one trillion, two hundred one billion, twenty million, two hundred twelve thousand, twenty-one".