212021121130 has 64 divisors (see below), whose sum is σ = 470158214400. Its totient is φ = 67036921344.

The previous prime is 212021121107. The next prime is 212021121131. The reversal of 212021121130 is 31121120212.

It is not an unprimeable number, because it can be changed into a prime (212021121131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 843537 + ... + 1065643.

It is an arithmetic number, because the mean of its divisors is an integer number (7346222100).

Almost surely, 2^212021121130 is an apocalyptic number.

212021121130 is an abundant number, since it is smaller than the sum of its proper divisors (258137093270).

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

212021121130 is a wasteful number, since it uses less digits than its factorization.

212021121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223183.

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

Adding to 212021121130 its reverse (31121120212), we get a palindrome (243142241342).

The spelling of 212021121130 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, one hundred thirty".