1200102220121 has 8 divisors (see below), whose sum is σ = 1372716663744. Its totient is φ = 1027780593840.

The previous prime is 1200102220111. The next prime is 1200102220147. The reversal of 1200102220121 is 1210222010021.

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

It is not a de Polignac number, because 1200102220121 - 2¹⁰ = 1200102219097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200102220096 and 1200102220105.

It is not an unprimeable number, because it can be changed into a prime (1200102220111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73195550 + ... + 73211943.

It is an arithmetic number, because the mean of its divisors is an integer number (171589582968).

Almost surely, 2^{1200102220121} is an apocalyptic number.

It is an amenable number.

1200102220121 is a deficient number, since it is larger than the sum of its proper divisors (172614443623).

1200102220121 is a wasteful number, since it uses less digits than its factorization.

1200102220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146408671.

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

Adding to 1200102220121 its reverse (1210222010021), we get a palindrome (2410324230142).

The spelling of 1200102220121 in words is "one trillion, two hundred billion, one hundred two million, two hundred twenty thousand, one hundred twenty-one".