1202200121001 has 24 divisors (see below), whose sum is σ = 1845533117664. Its totient is φ = 690258435840.

The previous prime is 1202200120999. The next prime is 1202200121021. The reversal of 1202200121001 is 1001210022021.

It is not a de Polignac number, because 1202200121001 - 2¹ = 1202200120999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1202200121021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50445576 + ... + 50469401.

It is an arithmetic number, because the mean of its divisors is an integer number (76897213236).

Almost surely, 2^{1202200121001} is an apocalyptic number.

1202200121001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202200121001 is a deficient number, since it is larger than the sum of its proper divisors (643332996663).

1202200121001 is a wasteful number, since it uses less digits than its factorization.

1202200121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100915029 (or 100915010 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1202200121001 its reverse (1001210022021), we get a palindrome (2203410143022).

The spelling of 1202200121001 in words is "one trillion, two hundred two billion, two hundred million, one hundred twenty-one thousand, one".