20101220120122 has 8 divisors (see below), whose sum is σ = 30161243811456. Its totient is φ = 10047472182972.

The previous prime is 20101220120041. The next prime is 20101220120171. The reversal of 20101220120122 is 22102102210102.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20101220120096 and 20101220120105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1568930538 + ... + 1568943349.

It is an arithmetic number, because the mean of its divisors is an integer number (3770155476432).

Almost surely, 2^{20101220120122} is an apocalyptic number.

20101220120122 is a deficient number, since it is larger than the sum of its proper divisors (10060023691334).

20101220120122 is a wasteful number, since it uses less digits than its factorization.

20101220120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137877092.

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

Adding to 20101220120122 its reverse (22102102210102), we get a palindrome (42203322330224).

The spelling of 20101220120122 in words is "twenty trillion, one hundred one billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-two".