11220001202121 has 96 divisors (see below), whose sum is σ = 17160678783360. Its totient is φ = 6480066023424.

The previous prime is 11220001202107. The next prime is 11220001202141. The reversal of 11220001202121 is 12120210002211.

It is not a de Polignac number, because 11220001202121 - 2¹⁴ = 11220001185737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11220001202121.

It is not an unprimeable number, because it can be changed into a prime (11220001202141) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1004201091 + ... + 1004212263.

It is an arithmetic number, because the mean of its divisors is an integer number (178757070660).

Almost surely, 2^{11220001202121} is an apocalyptic number.

It is an amenable number.

11220001202121 is a deficient number, since it is larger than the sum of its proper divisors (5940677581239).

11220001202121 is a wasteful number, since it uses less digits than its factorization.

11220001202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12043 (or 12006 counting only the distinct ones).

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

Adding to 11220001202121 its reverse (12120210002211), we get a palindrome (23340211204332).

The spelling of 11220001202121 in words is "eleven trillion, two hundred twenty billion, one million, two hundred two thousand, one hundred twenty-one".