1020212121008 has 20 divisors (see below), whose sum is σ = 1978620045480. Its totient is φ = 509600496384.

The previous prime is 1020212121001. The next prime is 1020212121017. The reversal of 1020212121008 is 8001212120201.

It is a super-3 number, since 3×1020212121008³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1020212121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31581110 + ... + 31613397.

It is an arithmetic number, because the mean of its divisors is an integer number (98931002274).

Almost surely, 2^{1020212121008} is an apocalyptic number.

It is an amenable number.

1020212121008 is a deficient number, since it is larger than the sum of its proper divisors (958407924472).

1020212121008 is a wasteful number, since it uses less digits than its factorization.

1020212121008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63195524 (or 63195518 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 1020212121008 its reverse (8001212120201), we get a palindrome (9021424241209).

The spelling of 1020212121008 in words is "one trillion, twenty billion, two hundred twelve million, one hundred twenty-one thousand, eight".