2021022101201 has 4 divisors (see below), whose sum is σ = 2022456468900. Its totient is φ = 2019587733504.

The previous prime is 2021022101179. The next prime is 2021022101227. The reversal of 2021022101201 is 1021012201202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261284545600 + 1759737555601 = 511160^2 + 1326551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021022101201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021022101251) 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, 717181736 + ... + 717184553.

It is an arithmetic number, because the mean of its divisors is an integer number (505614117225).

Almost surely, 2^{2021022101201} is an apocalyptic number.

It is an amenable number.

2021022101201 is a deficient number, since it is larger than the sum of its proper divisors (1434367699).

2021022101201 is a wasteful number, since it uses less digits than its factorization.

2021022101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434367698.

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

Adding to 2021022101201 its reverse (1021012201202), we get a palindrome (3042034302403).

The spelling of 2021022101201 in words is "two trillion, twenty-one billion, twenty-two million, one hundred one thousand, two hundred one".