212021121418 has 16 divisors (see below), whose sum is σ = 319622970240. Its totient is φ = 105480396000.

The previous prime is 212021121397. The next prime is 212021121419. The reversal of 212021121418 is 814121120212.

It is a junction number, because it is equal to n+sod(n) for n = 212021121392 and 212021121401.

It is not an unprimeable number, because it can be changed into a prime (212021121419) 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, 1589718 + ... + 1717918.

It is an arithmetic number, because the mean of its divisors is an integer number (19976435640).

Almost surely, 2^212021121418 is an apocalyptic number.

212021121418 is a deficient number, since it is larger than the sum of its proper divisors (107601848822).

212021121418 is a wasteful number, since it uses less digits than its factorization.

212021121418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132333.

The product of its (nonzero) digits is 512, while the sum is 25.

The spelling of 212021121418 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, four hundred eighteen".