2021212012201 has 16 divisors (see below), whose sum is σ = 2035748453760. Its totient is φ = 2006714413440.

The previous prime is 2021212012189. The next prime is 2021212012307. The reversal of 2021212012201 is 1022102121202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2021212012201 - 2¹⁵ = 2021211979433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021212012601) 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, 486685141 + ... + 486689293.

It is an arithmetic number, because the mean of its divisors is an integer number (127234278360).

Almost surely, 2^{2021212012201} is an apocalyptic number.

It is an amenable number.

2021212012201 is a deficient number, since it is larger than the sum of its proper divisors (14536441559).

2021212012201 is a wasteful number, since it uses less digits than its factorization.

2021212012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8016.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021212012201 its reverse (1022102121202), we get a palindrome (3043314133403).

The spelling of 2021212012201 in words is "two trillion, twenty-one billion, two hundred twelve million, twelve thousand, two hundred one".