20010222212154 has 16 divisors (see below), whose sum is σ = 41760463747392. Its totient is φ = 6380070850208.

The previous prime is 20010222212153. The next prime is 20010222212209. The reversal of 20010222212154 is 45121222201002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20010222212153) 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, 72500804979 + ... + 72500805254.

It is an arithmetic number, because the mean of its divisors is an integer number (2610028984212).

Almost surely, 2^{20010222212154} is an apocalyptic number.

20010222212154 is an abundant number, since it is smaller than the sum of its proper divisors (21750241535238).

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

20010222212154 is a wasteful number, since it uses less digits than its factorization.

20010222212154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145001610261.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 20010222212154 its reverse (45121222201002), we get a palindrome (65131444413156).

The spelling of 20010222212154 in words is "twenty trillion, ten billion, two hundred twenty-two million, two hundred twelve thousand, one hundred fifty-four".