1201020222121 has 8 divisors (see below), whose sum is σ = 1253517531840. Its totient is φ = 1148546165712.

The previous prime is 1201020222107. The next prime is 1201020222187. The reversal of 1201020222121 is 1212220201021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201020222121 - 2²⁹ = 1200483351209 is a prime.

It is a super-3 number, since 3×1201020222121³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201020222095 and 1201020222104.

It is not an unprimeable number, because it can be changed into a prime (1201020225121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5707731 + ... + 5914408.

It is an arithmetic number, because the mean of its divisors is an integer number (156689691480).

Almost surely, 2^{1201020222121} is an apocalyptic number.

It is an amenable number.

1201020222121 is a deficient number, since it is larger than the sum of its proper divisors (52497309719).

1201020222121 is a wasteful number, since it uses less digits than its factorization.

1201020222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11626655.

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

Adding to 1201020222121 its reverse (1212220201021), we get a palindrome (2413240423142).

The spelling of 1201020222121 in words is "one trillion, two hundred one billion, twenty million, two hundred twenty-two thousand, one hundred twenty-one".