1021212340000 has 60 divisors (see below), whose sum is σ = 2512335587454. Its totient is φ = 408484928000.

The previous prime is 1021212339949. The next prime is 1021212340021. The reversal of 1021212340000 is 432121201.

It can be written as a sum of positive squares in 5 ways, for example, as 68269328656 + 952943011344 = 261284^2 + 976188^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25510309 + ... + 25550308.

Almost surely, 2^{1021212340000} is an apocalyptic number.

1021212340000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021212340000 is an abundant number, since it is smaller than the sum of its proper divisors (1491123247454).

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

1021212340000 is an frugal number, since it uses more digits than its factorization.

1021212340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51060647 (or 51060624 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1021212340000 its reverse (432121201), we get a palindrome (1021644461201).

The spelling of 1021212340000 in words is "one trillion, twenty-one billion, two hundred twelve million, three hundred forty thousand".