2021012222201 has 4 divisors (see below), whose sum is σ = 2309728253952. Its totient is φ = 1732296190452.

The previous prime is 2021012222179. The next prime is 2021012222221. The reversal of 2021012222201 is 1022222101202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021012222201 - 2¹⁸ = 2021011960057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021012222201.

It is not an unprimeable number, because it can be changed into a prime (2021012222221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144358015865 + ... + 144358015878.

It is an arithmetic number, because the mean of its divisors is an integer number (577432063488).

Almost surely, 2^{2021012222201} is an apocalyptic number.

It is an amenable number.

2021012222201 is a deficient number, since it is larger than the sum of its proper divisors (288716031751).

2021012222201 is an equidigital number, since it uses as much as digits as its factorization.

2021012222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288716031750.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2021012222201 its reverse (1022222101202), we get a palindrome (3043234323403).

The spelling of 2021012222201 in words is "two trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, two hundred one".