1021121202012 has 12 divisors (see below), whose sum is σ = 2382616138056. Its totient is φ = 340373734000.

The previous prime is 1021121201923. The next prime is 1021121202041. The reversal of 1021121202012 is 2102021211201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1021121201982 and 1021121202000.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 42546716739 + ... + 42546716762.

It is an arithmetic number, because the mean of its divisors is an integer number (198551344838).

Almost surely, 2^{1021121202012} is an apocalyptic number.

1021121202012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021121202012 is an abundant number, since it is smaller than the sum of its proper divisors (1361494936044).

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

1021121202012 is a wasteful number, since it uses less digits than its factorization.

1021121202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85093433508 (or 85093433506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021121202012 its reverse (2102021211201), we get a palindrome (3123142413213).

The spelling of 1021121202012 in words is "one trillion, twenty-one billion, one hundred twenty-one million, two hundred two thousand, twelve".