1021210121102 has 8 divisors (see below), whose sum is σ = 1554678095016. Its totient is φ = 502984089432.

The previous prime is 1021210121053. The next prime is 1021210121111. The reversal of 1021210121102 is 2011210121201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1021210121102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3810485393 + ... + 3810485660.

It is an arithmetic number, because the mean of its divisors is an integer number (194334761877).

Almost surely, 2^{1021210121102} is an apocalyptic number.

1021210121102 is a deficient number, since it is larger than the sum of its proper divisors (533467973914).

1021210121102 is an equidigital number, since it uses as much as digits as its factorization.

1021210121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7620971122.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021210121102 its reverse (2011210121201), we get a palindrome (3032420242303).

Subtracting 1021210121102 from its reverse (2011210121201), we obtain a palindrome (990000000099).

The spelling of 1021210121102 in words is "one trillion, twenty-one billion, two hundred ten million, one hundred twenty-one thousand, one hundred two".