212020112121 has 8 divisors (see below), whose sum is σ = 292441534080. Its totient is φ = 136472715792.

The previous prime is 212020112099. The next prime is 212020112147. The reversal of 212020112121 is 121211020212.

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

It is not a de Polignac number, because 212020112121 - 2¹³ = 212020103929 is a prime.

It is a super-2 number, since 2×212020112121² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212020112121.

It is not an unprimeable number, because it can be changed into a prime (212020112021) 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, 1218506305 + ... + 1218506478.

It is an arithmetic number, because the mean of its divisors is an integer number (36555191760).

Almost surely, 2^212020112121 is an apocalyptic number.

It is an amenable number.

212020112121 is a deficient number, since it is larger than the sum of its proper divisors (80421421959).

212020112121 is a wasteful number, since it uses less digits than its factorization.

212020112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437012815.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212020112121 its reverse (121211020212), we get a palindrome (333231132333).

The spelling of 212020112121 in words is "two hundred twelve billion, twenty million, one hundred twelve thousand, one hundred twenty-one".