1021212111000 has 512 divisors, whose sum is σ = 3295365016320. Its totient is φ = 263208960000.

The previous prime is 1021212110977. The next prime is 1021212111001. The reversal of 1021212111000 is 1112121201.

1021212111000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021212111001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3030302832 + ... + 3030303168.

Almost surely, 2^{1021212111000} is an apocalyptic number.

1021212111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021212111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1647682508160).

1021212111000 is an abundant number, since it is smaller than the sum of its proper divisors (2274152905320).

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

1021212111000 is a wasteful number, since it uses less digits than its factorization.

1021212111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021212111000 its reverse (1112121201), we get a palindrome (1022324232201).

The spelling of 1021212111000 in words is "one trillion, twenty-one billion, two hundred twelve million, one hundred eleven thousand".