212021121310 has 32 divisors (see below), whose sum is σ = 398375366400. Its totient is φ = 81150516480.

The previous prime is 212021121281. The next prime is 212021121311. The reversal of 212021121310 is 13121120212.

212021121310 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212021121310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3814765 + ... + 3869944.

It is an arithmetic number, because the mean of its divisors is an integer number (12449230200).

Almost surely, 2^212021121310 is an apocalyptic number.

212021121310 is a deficient number, since it is larger than the sum of its proper divisors (186354245090).

212021121310 is a wasteful number, since it uses less digits than its factorization.

212021121310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684836.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212021121310 its reverse (13121120212), we get a palindrome (225142241522).

The spelling of 212021121310 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, three hundred ten".