1012112121102 has 16 divisors (see below), whose sum is σ = 2043142227072. Its totient is φ = 334217709560.

The previous prime is 1012112121089. The next prime is 1012112121107. The reversal of 1012112121102 is 2011212112101.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012112121107) 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, 788248674 + ... + 788249957.

It is an arithmetic number, because the mean of its divisors is an integer number (127696389192).

Almost surely, 2^{1012112121102} is an apocalyptic number.

1012112121102 is an abundant number, since it is smaller than the sum of its proper divisors (1031030105970).

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

1012112121102 is a wasteful number, since it uses less digits than its factorization.

1012112121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576498743.

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

Adding to 1012112121102 its reverse (2011212112101), we get a palindrome (3023324233203).

Subtracting 1012112121102 from its reverse (2011212112101), we obtain a palindrome (999099990999).

The spelling of 1012112121102 in words is "one trillion, twelve billion, one hundred twelve million, one hundred twenty-one thousand, one hundred two".