1022202121212 has 18 divisors (see below), whose sum is σ = 2583899806488. Its totient is φ = 340734040392.

The previous prime is 1022202121189. The next prime is 1022202121243. The reversal of 1022202121212 is 2121212022201.

It is a happy number.

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

It is a super-2 number, since 2×1022202121212² (a number of 25 digits) contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14197251648 + ... + 14197251719.

Almost surely, 2^{1022202121212} is an apocalyptic number.

1022202121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1022202121212 is an abundant number, since it is smaller than the sum of its proper divisors (1561697685276).

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

1022202121212 is a wasteful number, since it uses less digits than its factorization.

1022202121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28394503377 (or 28394503372 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1022202121212 its reverse (2121212022201), we get a palindrome (3143414143413).

The spelling of 1022202121212 in words is "one trillion, twenty-two billion, two hundred two million, one hundred twenty-one thousand, two hundred twelve".