20121222211000 has 64 divisors (see below), whose sum is σ = 47085446772000. Its totient is φ = 8048183449600.

The previous prime is 20121222210997. The next prime is 20121222211009. The reversal of 20121222211000 is 11222212102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121222211009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26960871 + ... + 27697129.

Almost surely, 2^{20121222211000} is an apocalyptic number.

20121222211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121222211000 is an abundant number, since it is smaller than the sum of its proper divisors (26964224561000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121222211000 is a wasteful number, since it uses less digits than its factorization.

20121222211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763609 (or 763595 counting only the distinct ones).

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

Adding to 20121222211000 its reverse (11222212102), we get a palindrome (20132444423102).

The spelling of 20121222211000 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred eleven thousand".