20120002122211 has 4 divisors (see below), whose sum is σ = 20120017553152. Its totient is φ = 20119986691272.

The previous prime is 20120002122167. The next prime is 20120002122229. The reversal of 20120002122211 is 11222120002102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20120002122211 - 2¹³ = 20120002114019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120002122281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5558691 + ... + 8434396.

It is an arithmetic number, because the mean of its divisors is an integer number (5030004388288).

Almost surely, 2^{20120002122211} is an apocalyptic number.

20120002122211 is a deficient number, since it is larger than the sum of its proper divisors (15430941).

20120002122211 is a wasteful number, since it uses less digits than its factorization.

20120002122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15430940.

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

Adding to 20120002122211 its reverse (11222120002102), we get a palindrome (31342122124313).

The spelling of 20120002122211 in words is "twenty trillion, one hundred twenty billion, two million, one hundred twenty-two thousand, two hundred eleven".