1202121220201 has 64 divisors (see below), whose sum is σ = 1475797397760. Its totient is φ = 966009856000.

The previous prime is 1202121220177. The next prime is 1202121220211. The reversal of 1202121220201 is 1020221212021.

It is a happy number.

It is not a de Polignac number, because 1202121220201 - 2¹⁷ = 1202121089129 is a prime.

It is a super-2 number, since 2×1202121220201² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1202121220211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77145231 + ... + 77160811.

It is an arithmetic number, because the mean of its divisors is an integer number (23059334340).

Almost surely, 2^{1202121220201} is an apocalyptic number.

1202121220201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202121220201 is a deficient number, since it is larger than the sum of its proper divisors (273676177559).

1202121220201 is a wasteful number, since it uses less digits than its factorization.

1202121220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16026.

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

Adding to 1202121220201 its reverse (1020221212021), we get a palindrome (2222342432222).

The spelling of 1202121220201 in words is "one trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred one".