101203101978 has 16 divisors (see below), whose sum is σ = 220806768096. Its totient is φ = 30667606640.

The previous prime is 101203101977. The next prime is 101203101991. The reversal of 101203101978 is 879101302101.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (101203101977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766690101 + ... + 766690232.

It is an arithmetic number, because the mean of its divisors is an integer number (13800423006).

Almost surely, 2^101203101978 is an apocalyptic number.

101203101978 is an abundant number, since it is smaller than the sum of its proper divisors (119603666118).

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

101203101978 is a wasteful number, since it uses less digits than its factorization.

101203101978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533380349.

The product of its (nonzero) digits is 3024, while the sum is 33.

The spelling of 101203101978 in words is "one hundred one billion, two hundred three million, one hundred one thousand, nine hundred seventy-eight".