1102021001252 has 6 divisors (see below), whose sum is σ = 1928536752198. Its totient is φ = 551010500624.

The previous prime is 1102021001219. The next prime is 1102021001261. The reversal of 1102021001252 is 2521001202011.

It can be written as a sum of positive squares in only one way, i.e., 595267799296 + 506753201956 = 771536^2 + 711866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1102021001252.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137752625153 + ... + 137752625160.

It is an arithmetic number, because the mean of its divisors is an integer number (321422792033).

Almost surely, 2^{1102021001252} is an apocalyptic number.

It is an amenable number.

1102021001252 is a deficient number, since it is larger than the sum of its proper divisors (826515750946).

1102021001252 is a wasteful number, since it uses less digits than its factorization.

1102021001252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275505250317 (or 275505250315 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1102021001252 its reverse (2521001202011), we get a palindrome (3623022203263).

The spelling of 1102021001252 in words is "one trillion, one hundred two billion, twenty-one million, one thousand, two hundred fifty-two".