221012012102 has 16 divisors (see below), whose sum is σ = 378892099872. Its totient is φ = 94715842560.

The previous prime is 221012012101. The next prime is 221012012119. The reversal of 221012012102 is 201210210122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012012101) 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, 101702 + ... + 672582.

It is an arithmetic number, because the mean of its divisors is an integer number (23680756242).

Almost surely, 2^221012012102 is an apocalyptic number.

221012012102 is a deficient number, since it is larger than the sum of its proper divisors (157880087770).

221012012102 is a wasteful number, since it uses less digits than its factorization.

221012012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598543.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221012012102 its reverse (201210210122), we get a palindrome (422222222224).

It can be divided in two parts, 2210120 and 12102, that added together give a palindrome (2222222).

The spelling of 221012012102 in words is "two hundred twenty-one billion, twelve million, twelve thousand, one hundred two".