10121202112212 has 18 divisors (see below), whose sum is σ = 25584149783738. Its totient is φ = 3373734037392.

The previous prime is 10121202112129. The next prime is 10121202112237. The reversal of 10121202112212 is 21221120212101.

It can be written as a sum of positive squares in only one way, i.e., 7452703441296 + 2668498670916 = 2729964^2 + 1633554^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140572251523 + ... + 140572251594.

Almost surely, 2^{10121202112212} is an apocalyptic number.

10121202112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10121202112212 is an abundant number, since it is smaller than the sum of its proper divisors (15462947671526).

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

10121202112212 is a wasteful number, since it uses less digits than its factorization.

10121202112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281144503127 (or 281144503122 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10121202112212 its reverse (21221120212101), we get a palindrome (31342322324313).

The spelling of 10121202112212 in words is "ten trillion, one hundred twenty-one billion, two hundred two million, one hundred twelve thousand, two hundred twelve".