1011021020102 has 4 divisors (see below), whose sum is σ = 1516531530156. Its totient is φ = 505510510050.

The previous prime is 1011021020101. The next prime is 1011021020183. The reversal of 1011021020102 is 2010201201101.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011021020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252755255024 + ... + 252755255027.

It is an arithmetic number, because the mean of its divisors is an integer number (379132882539).

Almost surely, 2^{1011021020102} is an apocalyptic number.

1011021020102 is a deficient number, since it is larger than the sum of its proper divisors (505510510054).

1011021020102 is an equidigital number, since it uses as much as digits as its factorization.

1011021020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505510510053.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1011021020102 its reverse (2010201201101), we get a palindrome (3021222221203).

The spelling of 1011021020102 in words is "one trillion, eleven billion, twenty-one million, twenty thousand, one hundred two".