11021212121010 has 128 divisors (see below), whose sum is σ = 32967053844480. Its totient is φ = 2295919731456.

The previous prime is 11021212120999. The next prime is 11021212121027. The reversal of 11021212121010 is 1012121212011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25335432 + ... + 25766771.

It is an arithmetic number, because the mean of its divisors is an integer number (257555108160).

Almost surely, 2^{11021212121010} is an apocalyptic number.

11021212121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11021212121010 is an abundant number, since it is smaller than the sum of its proper divisors (21945841723470).

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

11021212121010 is a wasteful number, since it uses less digits than its factorization.

11021212121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51102312.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11021212121010 its reverse (1012121212011), we get a palindrome (12033333333021).

The spelling of 11021212121010 in words is "eleven trillion, twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, ten".