20011111422151 has 8 divisors (see below), whose sum is σ = 21191641656624. Its totient is φ = 18830959635840.

The previous prime is 20011111422109. The next prime is 20011111422167. The reversal of 20011111422151 is 15122411111002.

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

It is a cyclic number.

It is not a de Polignac number, because 20011111422151 - 2²³ = 20011103033543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011111422101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94503165 + ... + 94714678.

It is an arithmetic number, because the mean of its divisors is an integer number (2648955207078).

Almost surely, 2^{20011111422151} is an apocalyptic number.

20011111422151 is a deficient number, since it is larger than the sum of its proper divisors (1180530234473).

20011111422151 is a wasteful number, since it uses less digits than its factorization.

20011111422151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189224081.

The product of its (nonzero) digits is 160, while the sum is 22.

Adding to 20011111422151 its reverse (15122411111002), we get a palindrome (35133522533153).

The spelling of 20011111422151 in words is "twenty trillion, eleven billion, one hundred eleven million, four hundred twenty-two thousand, one hundred fifty-one".