1212210121038 has 24 divisors (see below), whose sum is σ = 2820243955752. Its totient is φ = 346345748784.

The previous prime is 1212210121037. The next prime is 1212210121069. The reversal of 1212210121038 is 8301210122121.

It is a happy number.

It is a super-2 number, since 2×1212210121038² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212210120999 and 1212210121017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210121037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2061581545 + ... + 2061582132.

It is an arithmetic number, because the mean of its divisors is an integer number (117510164823).

Almost surely, 2^{1212210121038} is an apocalyptic number.

1212210121038 is an abundant number, since it is smaller than the sum of its proper divisors (1608033834714).

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

1212210121038 is a wasteful number, since it uses less digits than its factorization.

1212210121038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123163696 (or 4123163689 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 1212210121038 its reverse (8301210122121), we get a palindrome (9513420243159).

The spelling of 1212210121038 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, thirty-eight".