2021120022012 has 144 divisors (see below), whose sum is σ = 5988820938912. Its totient is φ = 525740544000.

The previous prime is 2021120022001. The next prime is 2021120022017. The reversal of 2021120022012 is 2102200211202.

It is a super-2 number, since 2×2021120022012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021120021982 and 2021120022000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021120022017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1252989 + ... + 2369012.

It is an arithmetic number, because the mean of its divisors is an integer number (41589034298).

Almost surely, 2^{2021120022012} is an apocalyptic number.

It is an amenable number.

2021120022012 is an abundant number, since it is smaller than the sum of its proper divisors (3967700916900).

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

2021120022012 is a wasteful number, since it uses less digits than its factorization.

2021120022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622108 (or 3622099 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2021120022012 its reverse (2102200211202), we get a palindrome (4123320233214).

The spelling of 2021120022012 in words is "two trillion, twenty-one billion, one hundred twenty million, twenty-two thousand, twelve".