1020212121198 has 32 divisors (see below), whose sum is σ = 2068046045856. Its totient is φ = 335489476608.

The previous prime is 1020212121167. The next prime is 1020212121221. The reversal of 1020212121198 is 8911212120201.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2618061 + ... + 2982392.

It is an arithmetic number, because the mean of its divisors is an integer number (64626438933).

Almost surely, 2^{1020212121198} is an apocalyptic number.

1020212121198 is an abundant number, since it is smaller than the sum of its proper divisors (1047833924658).

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

1020212121198 is a wasteful number, since it uses less digits than its factorization.

1020212121198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600868.

The product of its (nonzero) digits is 1152, while the sum is 30.

Adding to 1020212121198 its reverse (8911212120201), we get a palindrome (9931424241399).

The spelling of 1020212121198 in words is "one trillion, twenty billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ninety-eight".