1200101222121 has 32 divisors (see below), whose sum is σ = 1649670865920. Its totient is φ = 775593948864.

The previous prime is 1200101222107. The next prime is 1200101222143. The reversal of 1200101222121 is 1212221010021.

It is not a de Polignac number, because 1200101222121 - 2¹⁹ = 1200100697833 is a prime.

It is a super-4 number, since 4×1200101222121⁴ (a number of 49 digits) contains 4444 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200101222121.

It is not an unprimeable number, because it can be changed into a prime (1200101222821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14154571 + ... + 14239103.

It is an arithmetic number, because the mean of its divisors is an integer number (51552214560).

Almost surely, 2^{1200101222121} is an apocalyptic number.

It is an amenable number.

1200101222121 is a deficient number, since it is larger than the sum of its proper divisors (449569643799).

1200101222121 is a wasteful number, since it uses less digits than its factorization.

1200101222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85405.

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

Adding to 1200101222121 its reverse (1212221010021), we get a palindrome (2412322232142).

The spelling of 1200101222121 in words is "one trillion, two hundred billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-one".