20212022012121 has 12 divisors (see below), whose sum is σ = 29425025923072. Its totient is φ = 13368581487576.

The previous prime is 20212022012101. The next prime is 20212022012129. The reversal of 20212022012121 is 12121022021202.

It is a happy number.

20212022012121 is a `hidden beast` number, since 20 + 212 + 0 + 220 + 1 + 212 + 1 = 666.

It is not a de Polignac number, because 20212022012121 - 2³⁰ = 20210948270297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20212022012094 and 20212022012103.

It is not an unprimeable number, because it can be changed into a prime (20212022012129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8841653281 + ... + 8841655566.

Almost surely, 2^{20212022012121} is an apocalyptic number.

It is an amenable number.

20212022012121 is a deficient number, since it is larger than the sum of its proper divisors (9213003910951).

20212022012121 is a wasteful number, since it uses less digits than its factorization.

20212022012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17683308980 (or 17683308977 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20212022012121 its reverse (12121022021202), we get a palindrome (32333044033323).

The spelling of 20212022012121 in words is "twenty trillion, two hundred twelve billion, twenty-two million, twelve thousand, one hundred twenty-one".