2122201101021 has 16 divisors (see below), whose sum is σ = 2854714427136. Its totient is φ = 1402244888576.

The previous prime is 2122201100969. The next prime is 2122201101089. The reversal of 2122201101021 is 1201011022212.

It is a cyclic number.

It is not a de Polignac number, because 2122201101021 - 2¹³ = 2122201092829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122201101121) 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, 25554061 + ... + 25636973.

It is an arithmetic number, because the mean of its divisors is an integer number (178419651696).

Almost surely, 2^{2122201101021} is an apocalyptic number.

It is an amenable number.

2122201101021 is a deficient number, since it is larger than the sum of its proper divisors (732513326115).

2122201101021 is a wasteful number, since it uses less digits than its factorization.

2122201101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158532.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2122201101021 its reverse (1201011022212), we get a palindrome (3323212123233).

It can be divided in two parts, 2122201 and 101021, that added together give a palindrome (2223222).

The spelling of 2122201101021 in words is "two trillion, one hundred twenty-two billion, two hundred one million, one hundred one thousand, twenty-one".