1012201202121 has 8 divisors (see below), whose sum is σ = 1352822610720. Its totient is φ = 673190297472.

The previous prime is 1012201202113. The next prime is 1012201202123. The reversal of 1012201202121 is 1212021022101.

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

It is not a de Polignac number, because 1012201202121 - 2³ = 1012201202113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012201202121.

It is not an unprimeable number, because it can be changed into a prime (1012201202123) 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, 402624520 + ... + 402627033.

It is an arithmetic number, because the mean of its divisors is an integer number (169102826340).

Almost surely, 2^{1012201202121} is an apocalyptic number.

It is an amenable number.

1012201202121 is a deficient number, since it is larger than the sum of its proper divisors (340621408599).

1012201202121 is an equidigital number, since it uses as much as digits as its factorization.

1012201202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805251975.

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

Adding to 1012201202121 its reverse (1212021022101), we get a palindrome (2224222224222).

The spelling of 1012201202121 in words is "one trillion, twelve billion, two hundred one million, two hundred two thousand, one hundred twenty-one".