1200221122101 has 16 divisors (see below), whose sum is σ = 1619625659904. Its totient is φ = 790482597104.

The previous prime is 1200221122091. The next prime is 1200221122103. The reversal of 1200221122101 is 1012211220021.

It is a cyclic number.

It is not a de Polignac number, because 1200221122101 - 2⁵ = 1200221122069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200221122103) 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, 11703490 + ... + 11805596.

It is an arithmetic number, because the mean of its divisors is an integer number (101226603744).

Almost surely, 2^{1200221122101} is an apocalyptic number.

It is an amenable number.

1200221122101 is a deficient number, since it is larger than the sum of its proper divisors (419404537803).

1200221122101 is a wasteful number, since it uses less digits than its factorization.

1200221122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149400.

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

Adding to 1200221122101 its reverse (1012211220021), we get a palindrome (2212432342122).

The spelling of 1200221122101 in words is "one trillion, two hundred billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred one".