20210121222122 has 32 divisors (see below), whose sum is σ = 35473949253120. Its totient is φ = 8551755610560.

The previous prime is 20210121222107. The next prime is 20210121222157. The reversal of 20210121222122 is 22122212101202.

It is a junction number, because it is equal to n+sod(n) for n = 20210121222094 and 20210121222103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659842373 + ... + 659873000.

It is an arithmetic number, because the mean of its divisors is an integer number (1108560914160).

Almost surely, 2^{20210121222122} is an apocalyptic number.

20210121222122 is a deficient number, since it is larger than the sum of its proper divisors (15263828030998).

20210121222122 is a wasteful number, since it uses less digits than its factorization.

20210121222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319715438.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20210121222122 its reverse (22122212101202), we get a palindrome (42332333323324).

The spelling of 20210121222122 in words is "twenty trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".