1202210122021 has 4 divisors (see below), whose sum is σ = 1243665643500. Its totient is φ = 1160754600544.

The previous prime is 1202210121979. The next prime is 1202210122027.

It is a happy number.

1202210122021 is nontrivially palindromic in base 10.

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 991079980900 + 211130141121 = 995530^2 + 459489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202210122021 - 2¹⁹ = 1202209597733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202210121986 and 1202210122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202210122027) 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, 20727760696 + ... + 20727760753.

It is an arithmetic number, because the mean of its divisors is an integer number (310916410875).

Almost surely, 2^{1202210122021} is an apocalyptic number.

It is an amenable number.

1202210122021 is a deficient number, since it is larger than the sum of its proper divisors (41455521479).

1202210122021 is an equidigital number, since it uses as much as digits as its factorization.

1202210122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41455521478.

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

It can be divided in two parts, 1202210 and 122021, that added together give a palindrome (1324231).

The spelling of 1202210122021 in words is "one trillion, two hundred two billion, two hundred ten million, one hundred twenty-two thousand, twenty-one".