1211112120102 has 8 divisors (see below), whose sum is σ = 2422224240216. Its totient is φ = 403704040032.

The previous prime is 1211112120079. The next prime is 1211112120121. The reversal of 1211112120102 is 2010212111121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1211112120102 is an admirable number.

It is a super-2 number, since 2×1211112120102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100926010003 + ... + 100926010014.

It is an arithmetic number, because the mean of its divisors is an integer number (302778030027).

Almost surely, 2^{1211112120102} is an apocalyptic number.

1211112120102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1211112120102 is a wasteful number, since it uses less digits than its factorization.

1211112120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201852020022.

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

Adding to 1211112120102 its reverse (2010212111121), we get a palindrome (3221324231223).

It can be divided in two parts, 12111121 and 20102, that multiplied together give a palindrome (243457754342).

The spelling of 1211112120102 in words is "one trillion, two hundred eleven billion, one hundred twelve million, one hundred twenty thousand, one hundred two".